Cisco CAB-232MT= serial cable
Contents
1. DD DCE op og og og og og oe ore oem lt gt Ka H1616a Also available but not shown in Figure C 7 are CAB V35MCz a V 35 cable with a plug on the network end for DCE mode and CAB V35FT a V 35 cable with a receptacle on the network end for DTE mode These cables are used for connecting V 35 equipped systems back to back Cisco 7100 Series VPN Router Installation and Configuration Guide ici ome AppendixC Cable Specifications Cisco 7120 4T1 and Cisco 7140 8T Cables and Pinouts W Table C 12 V 35 Adapter Cable Signals DTE DTE Cable CAB V35FT or CAB V35M T Router End HD 60 Position Plug Netw ork End 34 Position Plug Signal Pin Pin Signal Shield ground 46 A Frame ground Circuit ground 45 B Circuit ground RTS CTS 42 gt C RTS CTS RTS 35 lt D CTS DSR DTR 34 lt E DSR DCD LL 33 lt F RLSD DTR DSR 43 gt H DTR LL DCD 44 gt K LT TxD RxD 18 gt P SD TxD RxD 17 gt S SD RxD TxD 28 lt R RD RxD TxD 27 lt T RD TxCE TxC 20 gt U SCTE TxCE TxC 19 gt W SCTE RxC TxCE 26 lt V SCR RxC TxCE 25 lt X SCR TxC RxC 24 lt Y SCT TxC RxC 23 lt AA SCT Mode 1 49 Shorting group Ground 48 Mode 0 50 Shorting group Ground 51 Mode_DCE 52 TxC NIL 53 Shorting group RxC TxCE 54 RxC TxD 552. Router End HD Netw ork End 60 Position Plug DB 15 Receptacle Signal Pin Pin Signal Shield ground 46 1 Shield ground RxD TxD 11 gt 2 Transmit RxD TxD 12 gt 9 Transmit CTS RTS 9 gt 3 Control CTS RTS 10 gt 10 Control TxD RxD 28 lt 4 Receive TxD RxD 27 lt 11 Receive RTS CTS 1 lt 5 Indication RTS CTS 2 lt 12 Indication TxC RxC 26 lt 6 Timing TxC RxC 25 lt 13 Timing Circuit ground 15 8 Circuit ground Ground 48 Shorting group Mode_2 47 Ground 51 Mode_DCE 52 1 HD high density EIA 530 Connections The EIA 530 adapter cable is available in DTE mode only The router end of the E A 530 adapter cable is a high density 60 pin plug The network end of the adapter cable is a standard DB 25 plug commonly used for ELA TIA 232 connections Figure C 9 shows the DB 25 connector at the network end of the adapter cable Figure C 9 EIA 530 Adapter Cable Connector ee K D Table C 16 EIA 530 DTE Adapter Cable Signals CAB 530MT DTE H1615a Router End HD Netw ork End 60 Position Plug DB 25 Plug Signal Pin Pin Signal Shield ground 46 1 Shield ground mi Cisco 7100 Series VPN Router Installation and Configuration Guide 78 6341 03 AppendixC Cable Specifications Cisco 7120 4T1 and Cisco 7140 8T Cables and Pinouts W Ta
3. Ground 56 1 HD high density Table C 13 V 35 Adapter Cable Signals DCE DCE Cable CAB V35FC or CAB V35M C Router End HD Netw ork End 34 Position 60 Position Plug Receptacle Signal Pin Pin Signal I 78 6341 03 Cisco 7100 Series VPN Router Installation and Configuration Guide gg Appendix C Cable Specifications HE Cisco 7120 471 and Cisco 7140 8T Cables and Pinouts Table C 13 V 35 Adapter Cable Signals DCE continued DCE Cable CAB V35FC or CAB V35M C Shield ground 46 A Frame ground Circuit ground 45 B Circuit ground CTS RTS 35 lt C RTS RTS CTS 42 gt D CTS DTR DSR 43 gt E DSR LL DCD 44 gt F RLSD DSR DTR 34 lt H DTR DCD LL 33 lt K LT RxD TxD 28 lt P SD RxD TxD 27 lt S SD TxD RxD 18 gt R RD TxD RxD 17 gt T RD RxC TxCE 26 lt U SCTE RxC TxCE 25 lt W SCTE NIL RxC 22 gt V SCR NIL RxC 21 gt X SCR TxCE TxC 20 gt Y SCT TxCE TxC 19 gt AA SCT Mode 1 49 Shorting group Ground 48 Mode 0 50 Shorting group Ground 51 TxC NIL 53 Shorting group RxC TxCE 54 RxC TxD 55 Ground 56 1 HD high density mi Cisco 7100 Series VPN Router Installation and Configuration Guide 78 6341 03 AppendixC Cable Specifications Cisco 7120 4T1 and Cisco 7140 8T Cables and Pinouts W X 21 Connec
4. Use the RJ 45 to RJ 45 rollover cable and RJ 45 to DB 25 female DTE adapter labeled TERMINAL to connect the console port to a terminal Table C 2 lists the signals and pinouts for the asynchronous serial console port the RJ 45 to RJ 45 rollover cable and the RJ 45 to DB 25 female DTE adapter labeled TERMINAL Table C 2 Console Port Signaling and Cabling Using a DB 25 Adapter Console Port RJ 45 to DB 25 DTE RJ 45 to RJ 45 Rollover Cable Terminal Adapter Console Device Signal RJ 45 Pin RJ 45 Pin DB 25 Pin Signal RTS 1 8 5 CTS DTR 2 7 6 DSR TxD 3 6 3 RxD GND 4 5 7 GND GND 5 4 7 GND RxD 6 3 2 TxD DSR 7 2 20 DTR CTS 8 1 4 RTS 1 You can use the same cabling to connect a console to the auxiliary port 2 Pin 1 is connected internally to pin 8 Auxiliary Port Cables and Pinouts Use the RJ 45 to RJ 45 rollover cable and RJ 45 to DB 25 male DCE adapter labeled MODEM to connect the auxiliary port to a modem Table C 3 lists the signals and pinouts for the asynchronous serial auxiliary port the RJ 45 to RJ 45 rollover cable and the RJ 45 to DB 25 male DCE adapter labeled MODEM Table C 3 Auxiliary Port Signaling and Cabling Using a DB 25 Adapter RJ 45 to R 45 RJ 45 to DB 25 AUX Port DTE Rollover Cable Modem Adapter M odem DCE Signal RJ 45 Pin RJ 45 Pin DB 25 Pin Signal RTS 1 8 4 RTS DTR 2 7 20 DTR TxD 3 6 3 TxD GND 4 5 7 GND
5. GND 5 4 7 GND RxD 6 3 2 RxD DSR 7 2 8 DCD CTS 8 1 5 CTS 78 6341 03 Cisco 7100 Series VPN Router Installation and Configuration Guide jg Appendix Cable Specifications HZ Fast Ethernet Port Cables and Pinouts Fast Ethernet Port Cables and Pinouts The 10BaseT 100BaseTX Fast Ethernet ports support IEEE 802 3 and IEEE 802 3u specifications for 10 Mbps and 100 Mbps transmission over unshielded twisted pair UTP cables Each Fast Ethernet port on the router has an RJ 45 connector to attach to Category 3 or Category 5 UTP cables Cisco Systems does not supply Category 3 or Category 5 UTP RJ 45 cables these cables are available commercially Use a Category 3 UTP crossover cable when connecting 10BaseT port to a hub or use a Category 3 UTP straight through cable when connecting to an end station Use a Category 5 UTP crossover cable when connecting 100BaseTX to a hub or use a Category 5 UTP straight through cable when connecting to an end station To determine the type of RJ 45 cable examine the sequence of colored wires as follows Straight through Colored wires are in the same sequence at both ends of the cable Crossover tThe first far left colored wire at one end of the cable is the third colored wire at the other end of the cable and the second colored wire at one end of the cable is the sixth colored wire at the other end of the cable Table C 4 lists the 10BaseT pinouts and Table C 5 lists
6. 18 summarizes the interface types connectors and cables Table C 18 AT3 AE3 MM3 and SMI3 Connector Types and Cables Bellcore Rate Connector ITU T G 957 GR 253 Wave Maximum Interface Mbps Type Cable Type Standard Standard length Distance AT3 44 736 BNC Coaxial 450 ft 137 2 m AE3 34 368 BNC Coaxial 1250 ft 381 m MM3 155 52 SC 62 5 125 Intra office Short reach 1310 nm 1 2 mi microns STM 1 I 1 OC3 2 km multimode SMI3 155 52 SC 9 microns Short haul Intermediat 1310nm 9 3 mi single mod STM 1 S 1 1 e reach 15 km e OC3 The ATM port is considered a DTE device Cisco 7100 Series VPN Router Installation and Configuration Guide I 78 6341 03 Appendix Cable Specifications HE Cisco 7120 AT3 Cisco 7140 2AT3 Cisco 7120 AE3 Cisco 7140 2AE3 Cisco 7120 SM13 and Cisco 7140 2M M3 Cables AT3 and AE3 Cables and Receptacles The AT3 and AE3 interfaces provide an interface to ATM switching fabrics for the bidirectional transmission and reception of data at rates of up to 45 Mbps for T3 and 34 Mbps for E3 The AT3 and AE3 interfaces use a 75 ohm coaxial interface cable to connect your router to an ATM T3 or E3 network The AT3 and AE3 cables see Figure C 11 conform to EIA TIA 612 and EJA TIA 613 specifications The AT3 and AE3 ports are considered DTE devices Figure C 11 AT3 and AE3 Cables 75 ohm coaxial cabling 299
7. CTS DTR DSR 43 gt 6 DSR Circuit ground 45 7 Circuit ground LL DCD 44 gt 8 DCD TxCE TxC 39 gt 15 TxC NIL RxC 40 gt 17 RxC DCD LL 33 lt 18 LTST DSR DTR 34 lt 20 DTR I 78 6341 03 Cisco 7100 Series VPN Router Installation and Configuration Guide gg Appendix Cable Specifications WE Cisco 7120 471 and Cisco 7140 8T Cables and Pinouts Table C 9 EIA TIA 232 Adapter Cable Signals DCE continued DCE Cable CAB 232FC RxC TxCE 38 lt 24 TxCE Mode 0 50 Shorting group Ground 51 1 HD high density EIA TIA 449 Connections The router end of all EIA TIA 449 adapter cables is a high density 60 pin plug The network end of the adapter cable provides a standard 37 pin D shell connector which is commonly used for EIA TIA 449 connections Figure C 6 shows the connectors at the network end of the adapter cable EIA TIA 449 cables are available as either DTE DB 37 plug or DCE DB 37 receptacle See Table C 10 and Table C 11 for pinouts Figure C 6 EIA TIA 449 Adapter Cable Connectors e T b O or T t i C 00000000000000000 2 00000000000000000 oD B DCE 2 1 x Table C 10 EIA TIA 449 Adapter Cable Signals DTE DTE Cable CAB 449M T Router End HD Netw ork End 60 Position Plug DB 37 Plug Sig
8. Cisco 7120 SM13 and Cisco 7140 2M M3 Cables amp Note A single fiber link should not mix 62 5 and 50 micron cable Fiber Optic Transmission Specifications The following sections describe the SONET specifications for fiber optic transmissions define the power budget and help you approximate the power margin for multimode and single mode transmissions For more information on determining attenuation and power budget see the following publications T1E1 2 92 020R2 ANSI the Draft American National Standard for Telecommunications entitled Broadband ISDN Customer Installation Interfaces Physical Layer Specification Power Margin Analysis AT amp T Technical Note TN89 O04LWP May 1989 SONET Distance Limitations The SONET specification for fiber optic transmission defines two types of fiber single mode and multimode Modes can be thought of as bundles of light rays entering the fiber at a particular angle Single mode fiber allows only one mode of light to propagate through the fiber whereas multimode fiber allows multiple modes of light to propagate through the fiber Because multiple modes of light propagating through the fiber travel different distances depending on the entry angles causing them to arrive at the destination at different times a phenomenon called modal dispersion single mode fiber is capable of higher bandwidth and greater cable run distances than multimode fiber The typical maximum distances for sin
9. kilometers apart connected through a patch panel in an intervening building with a total of 12 connectors Length of single mode link 8 km 12 connectors Estimate the power budget as follows PM PB LL PM 16 dB 8 km 0 5 dB km 12 0 5 dB PM 16 dB 4 dB 6 dB PM 6 dB The value of 6 dB indicates that this link would have sufficient power for transmission and is not in excess of the maximum receiver input power Using Statistics to Estimate the Power Budget Statistical models more accurately determine the power budget than the worst case method Determining the link loss with statistical methods requires accurate knowledge of variations in the data link components Statistical power budget analysis is beyond the scope of this document For further information refer to UNI Forum specifications ITU T standards and your equipment specifications I 78 6341 03 Cisco 7100 Series VPN Router Installation and Configuration Guide jg Appendix Cable Specifications EE Cisco 7120 AT3 Cisco 7140 2AT3 Cisco 7120 AE3 Cisco 7140 2AE3 Cisco 7120 SM13 and Cisco 7140 2M M3 Cables Cisco 7100 Series VPN Router Installation and Configuration Guide
10. of T3 and E3 Serial Port DSUs Device Full Rate Scrambling Subrate MDL T3 DSU DL3100 Yes Yes Yes No Kentrox Yes Yes Yes No Larscom Yes Yes Yes No E3 DSU mi Cisco 7100 Series VPN Router Installation and Configuration Guide 78 6341 03 AppendixC Cable Specifications Cisco 7120 AT3 Cisco 7140 2AT3 Cisco 7120 AE3 Cisco 7140 2AE3 Cisco 7120 SM13 and Cisco 7140 2MM3 Cables W Table C 17 Feature Compatibilities of T3 and E3 Serial Port DSUs continued Device Full Rate Scrambling Subrate MDL DL3100E Yes No Yes No Kentrox Yes Yes Yes No 1 MDL Maintenance Digital Link 2 T3 and E3 serial ports support either scrambling or Kentrox subrate not both at the same time 3 DL3100E does not support scrambling However the E3 serial port can turn on scrambling in DSU mode 0 for connecting to another E3 serial port The E3 serial port supports either scrambling in mode 0 or DL3100E subrate not both at the same time Cisco 7120 AT3 Cisco 7140 2AT3 Cisco 7120 AE3 Cisco 7140 2AE3 Cisco 7120 SM 13 and Cisco 7140 2M M 3 Cables 2 The AT3 AE3 MM3 OC 3c STM 1 multimode and SMI3 OC 3c STM 1 single mode intermediate reach interfaces in Cisco 7120 series and Cisco 7140 series routers are full duplex You must use the appropriate ATM interface cable to connect the interface with an external ATM network These interfaces are considered DTE devices Table C
11. the 100BaseTX pinouts for the two Fast Ethernet ports Table C 4 10BaseT RJ 45 Connector Pinouts RJ 45 Pin Description 1 Tx 2 Tx 3 Rx 6 Rx Table C 5 100BaseTX RJ 45 Connector Pinouts RJ 45 Pin Description 1 Tx 2 Tx 3 Rx 6 Rx Cisco 7100 Series VPN Router Installation and Configuration Guide lt oe AppendixC Cable Specifications Cisco 7120 4T1 and Cisco 7140 8T Cables and Pinouts W Figure C 2 shows the RJ 45 cable connectors Figure C 2 RJ 45 Plug and Receptacle 87654321 RJ 45 connector H2936 Cisco 7120 4T1 and Cisco 7140 8T Cables and Pinouts L Note gt The four T1 ports on the Cisco 7120 4T1 and the eight T1 ports on the Cisco 7140 8T and adapter cables allow a high density of interface ports regardless of the size of the connectors typically used with each electrical interface type All ports use an identical 60 pin D shell receptacle that supports all interface types EIA TIA 232 V35 EIA TIA 449 X 21 EIA 530 Each port requires a serial adapter cable which provides the interface between the high density serial port and the standard connectors that are commonly used for each electrical interface type The adapter cable determines the electrical interface type and mode of the port DTE or DCE to which it is connected The network end of the cable is an industry standard connector for
12. 232 DTE mode with a DB 25 plug CAB 232MT DCE mode with a DB 25 receptacle CAB 232FC EIA TIA 449 DTE mode with a 37 pin D shell plug CAB 449MT DCE mode with a 37 pin D shell receptacle CAB 449C V 35 DTE mode or DCE mode with a 34 pin CAB V35MT or Winchester type V 35 plug CAB V35MC DTE mode or DCE mode with a 34 pin CAB V35FT or Winchester type V 35 receptacle CAB V35FC Male DB 60 plug on the router end and a male CAB V35MTS DB 34 shielded plug on the network end X 21 DTE mode with a DB 15 plug CAB X21MT DCE mode with a DB 25 receptacle CAB X21FC EIA 530 DTE mode with a DB 25 plug CAB 530MT Cisco 7100 Series VPN Router Installation and Configuration Guide ce ene AppendixC Cable Specifications Cisco 7120 4T1 and Cisco 7140 8T Cables and Pinouts W Figure C 4 shows the supported serial cables Figure C 4 T1 Serial Cables Router connections O00000000 des bes e O ocoo0000 O EIA TIA 232 EIA TIA 449 V 35 X 21 EIA 530 Network connections at the modem or CSU DSU 23975 Metric M3 thumbscrews are included with each cable to allow connections to devices that use metric hardware Because the T1 ports use a special high density port that requires special adapter cables for each electrical interface type we recommend that you obtain serial interface cables from the factory Serial signals can travel a limi
13. 90000000 858 O 900000 9583958829955 39285992559053 re O 900000 RSS 8383838 838 30 900000 O00 Q 200900 i 2898 g9 oc0o0o0009983999 999959669688588S8o5 RX X QO0000000 oD 8759595559953954 OAZ 0000000088 3889 i To ATM network equipment AT3 or AE3 ports consist of two connectors transmit and receive The 75 ohm coaxial cable Cisco product number CAB ATM DS3 E3 is available only from Cisco Systems it is not available from outside commercial cable vendors The Cisco 75 ohm coaxial cable is available only in 10 foot 3 05 meter lengths The typical maximum distance between stations for T3 and E3 transmissions is 1300 feet 396 meters Note To ensure compliance with EMI and European certification standards for emission control EN55022 CISPR22 Class B for radiated emission levels the transmit and receive cables should be tied together along their entire length and ferrite beads should be installed on each cable near the transmit and receive connectors Cisco 7100 Series VPN Router Installation and Configuration Guide lt ome AppendixC Cable Specifications Cisco 7120 AT3 Cisco 7140 2AT3 Cisco 7120 AE3 Cisco 7140 2AE3 Cisco 7120 SM13 and Cisco 7140 2MM3 Cables W MM3 and SMI3 Cables and Receptacles The MM3 OC 3c STM 1 multimode and SMI3 OC 3c STM 1 single mode intermediate reach interfaces provides an interface to ATM switching fabrics for transm
14. Cable Specifications This appendix provides the following cabling and pinout information for the Cisco 7100 series routers Console and Auxiliary Port Cables and Pinouts page C 1 Fast Ethernet Port Cables and Pinouts page C 4 Cisco 7120 4T1 and Cisco 7140 8T Cables and Pinouts page C 5 Cisco 7120 T3 Cisco 7120 E3 Cisco 7140 2T3 and Cisco 7140 2E3 Cables page C 18 Cisco 7120 AT3 Cisco 7140 2AT3 Cisco 7120 AE3 Cisco 7140 2AE3 Cisco 7120 SMI3 and Cisco 7140 2MM3 Cables page C 19 2 Note This appendix specifies pinouts only for the pins used Pins not listed in the tables in this appendix are not connected Console and Auxiliary Port Cables and Pinouts The router arrives with a console and auxiliary cable kit which contains the cable and adapters you need to connect a console an ASCII terminal or PC running terminal emulation software or modem to the router The console and auxiliary cable kit includes RJ 45 to RJ 45 rollover cable RJ 45 to DB 9 female data terminal equipment DTE adapter labeled TERMINAL RJ 45 to DB 25 female DTE adapter labeled TERMINAL RJ 45 to DB 25 male data communications equipment DCE adapter labeled MODEM Cisco 7100 Series VPN Router Installation and Configuration Guide ECL uzm Appendix Cable Specifications W Console and Auxiliary Port Cables and Pinouts Identifying a Rollover Cable You can identify a rollover cable by comparing the two modular ends o
15. ST TxCE TxC 14 gt 23 ST TxD RxD 11 gt 6 RD TxD RxD 12 gt 24 RD CTS RTS 1 lt 7 RS CTS RTS 2 lt 25 RS TxC RxC 24 gt 8 RT TxC RxC 23 gt 26 RT RTS CTS 9 gt 9 CS RTS CTS 10 gt 27 CS Cisco 7100 Series VPN Router Installation and Configuration Guide EE Boca Appendix Cable Specifications WE Cisco 7120 471 and Cisco 7140 8T Cables and Pinouts Table C 11 EIA TIA 449 Adapter Cable Signals DCE continued DCE Cable CAB 449C NIL LL 29 gt 10 LL Circuit ground 30 37 SC DTR DSR 7 gt 11 ON DTR DSR 8 gt 29 ON DSR DTR 3 lt 12 TR DSR DTR 4 lt 30 TR DCD DCD 5 gt 13 RR DCD DCD 6 gt 31 RR RxC TxCE 26 lt 17 TT RxC TxCE 25 lt 35 TT Circuit ground 15 19 SG Circuit ground 16 20 RC Mode 1 49 Shorting group Ground 48 1 HD high density V 35 Connections The router end of all V 35 adapter cables is a high density 60 pin plug The network end of the adapter cable provides a standard 34 pin Winchester type connector commonly used for V 35 connections Figure C 7 shows the connectors at the network end of the V 35 adapter cable V 35 cables are available with a standard V 35 plug for DTE mode CAB V35MT or a V 35 receptacle for DCE mode CAB V35FC See Table C 12 and Table C 13 for pinouts Figure C 7 V 35 Adapter Cable Connectors
16. ations Cisco 7120 AT3 Cisco 7140 2AT3 Cisco 7120 AE3 Cisco 7140 2AE3 Cisco 7120 SM13 and Cisco 7140 2MM3 Cables Hi Chromatic dispersion Spreading of the signal in time because of the different speeds of light wavelengths Modal dispersion Spreading of the signal in time because of the different propagation modes in the fiber Attenuation is significantly lower for optical fiber than for other media For multimode transmission chromatic and modal dispersion reduce the available power of the system by the combined dispersion penalty dB The power lost over the data link is the sum of the component dispersion and modal losses Table C 21 lists the factors of attenuation and dispersion for typical fiber optic cable Table C 21 Typical Fiber Optic Link Attenuation and Dispersion Limits Limits Single mode Multimode Attenuation 0 5 dB km 1 0 dB km Dispersion No limit 500 MHz km 1 The product of bandwidth and distance must be less than 500 MHz km Approximating the MM3 and SMI3 Port Power Margin The LED used for a multimode transmission light source creates multiple propagation paths of light each with a different path length and time requirement to cross the optical fiber causing signal dispersion smear Higher order mode loss HOL results from light from the LED entering the fiber and being radiated into the fiber cladding A worst case estimate of power margin PM for multimode transmissions assumes
17. ble C 16 EIA 530 DTE Adapter Cable Signals CAB 530MT Router End HD Netw ork End 60 Position Plug DB 25 Plug TxD RxD 11 gt 2 TxD TxD RxD 12 gt 14 TxD RxD TxD 28 lt 3 RxD RxD TxD 27 lt 16 RxC RTS CTS 9 gt 4 RTS RTS CTS 10 gt 19 RTS CTS RTS 1 lt 5 CTS CTS RTS 2 lt 13 CTS DSR DTR 3 lt 6 DSR DSR DTR 4 lt 22 DSR DCD DCD 5 lt 8 DCD DCD DCD 6 lt 10 DCD TxC RxC 24 lt 15 TxC TxC RxC 23 lt 12 TxC RxC TxCE 26 lt 17 RxC RxC TxCE 25 lt 9 RxC LL DCD 44 gt 18 LL Circuit ground 45 7 Circuit ground DTR DSR 7 gt 20 DTR DTR DSR 8 gt 23 DTR TxCE TxC 13 gt 24 TxCE TxCE TxC 14 gt 11 TxCE Mode_1 49 Shorting group Ground 48 Mode_2 47 Ground 51 Shorting group Mode_DCE 52 1 HD high density Cisco 7100 Series VPN Router Installation and Configuration Guide rece m Appendix Cable Specifications HE Cisco 7120 T3 Cisco 7120 E3 Cisco 7140 273 and Cisco 7140 2E3 Cables Cisco 7120 T3 Cisco 7120 E3 Cisco 7140 2T3 and Cisco 7140 2E3 Cables 2 The T3 or E3 serial interface cable on the Cisco 7120 and Cisco 7140 series which is a 75 ohm coaxial cable is used to connect your router to a T3 or E3 serial network Serial cables conform to EIA TIA 612 and EIA TIA 613 specifications The serial ports a
18. ersion limit on the link 4 km x 155 52 MHz gt 500 MHz km this link would not work with multimode fiber In this case single mode fiber would be the better choice Cisco 7100 Series VPN Router Installation and Configuration Guide C24 ome AppendixC Cable Specifications Cisco 7120 AT3 Cisco 7140 2AT3 Cisco 7120 AE3 Cisco 7140 2AE3 Cisco 7120 SM13 and Cisco 7140 2MM3 Cables Hi Single M ode Transmission The single mode signal source is an injection laser diode Single mode transmission is useful for longer distances because there is a single transmission path within the fiber and smear does not occur In addition chromatic dispersion is also reduced because laser light is essentially monochromatic The receiver for single mode intermediate reach SMI cannot be overloaded by the SMI transmitter and does not require a minimum fiber cable length or loss The maximum receive power for single mode long reach SML is 10 dBm and the maximum transmit power is 0 dBm The SML receiver can therefore be overloaded when short lengths of fiber are used Overloading the receiver will not damage the receiver but can cause unreliable operation To prevent overloading an SML receiver connected with short fiber links insert a minimum 10 dB attenuator on the link between any single mode long reach transmitter and the receiver SONET Single M ode Power Budget Example The following example of a single mode power budget assumes 2 buildings 8
19. f the cable Holding the cables side by side with the tab at the back the wire connected to the pin on the outside of the left plug should be the same color as the wire connected to the pin on the outside of the right plug See Figure C 1 If your cable was purchased from Cisco Systems pin 1 will be white on one connector and pin 8 will be white on the other connector a rollover cable reverses pins 1 and 8 2 and 7 3 and 6 and 4 and 5 Figure C 1 Identifying a Rollover Cable H5663 Console Port Cables and Pinouts Use the RJ 45 to RJ 45 rollover cable and RJ 45 to DB 9 female DTE adapter labeled TERMINAL to connect the console port to a PC running terminal emulation software Table C 1 lists the signals and pinouts for the asynchronous serial console port the RJ 45 to RJ 45 rollover cable and the RJ 45 to DB 9 female DTE adapter labeled TERMINAL Table C 1 Console Port Signaling and Cabling Using a DB 9 Adapter RJ 45 to DB 9 Console Port DTE RJ 45 to RJ 45 Rollover Cable Terminal Adapter Console Device Signal RJ 45 Pin RJ 45 Pin DB 9 Pin Signal RTS 1 8 8 CTS DTR 2 7 6 DSR TxD 3 6 2 RxD GND 4 5 5 GND GND 5 4 5 GND RxD 6 3 3 TxD DSR 7 2 4 DTR CTS 8 1 7 RTS 1 Pin 1 is connected internally to pin 8 Cisco 7100 Series VPN Router Installation and Configuration Guide co ome AppendixC Cable Specifications Console and Auxiliary Port Cables and Pinouts W
20. gle mode and multimode transmissions as defined by SONET are in Table C 20 If the distance between two connected stations is greater than this maximum distance significant signal loss can result making transmission unreliable Table C 20 SONET Maximum Fiber Optic Transmission Distances Transceiver Type Maximum Distance between Stations Single mode long reach SML Up to 24 8 miles 40 kilometers Single mode intermediate reach SMI Up to 9 3 miles 15 kilometers Multimode MM Up to 1 2 miles 2 kilometers 1 Table C 20 gives typical results Use the power budget calculations described in the following sections to determine the actual distances Power Budget To design an efficient optical data link evaluate the power budget The power budget is the amount of light available to overcome attenuation in the optical link and to exceed the minimum power that the receiver requires to operate within its specifications Proper operation of an optical data link depends on modulated light reaching the receiver with enough power to be correctly demodulated Attenuation caused by the passive media components cables cable splices and connectors is common to both multimode and single mode transmission The following variables reduce the power of the signal light transmitted to the receiver in multimode transmission Cisco 7100 Series VPN Router Installation and Configuration Guide lt ome Appendix Cable Specific
21. gure C 5 EIA TIA 232 Adapter Cable Connectors H1343a O e00000000000 OD DCE i lA Table C 8 EIA TIA 232 Adapter Cable Signals DTE DTE Cable CAB 232MT Router End HD Netw ork End 60 Position Plug DB 25 Plug Signal Pin Pin Signal Cisco 7100 Series VPN Router Installation and Configuration Guide lt ome AppendixC Cable Specifications Cisco 7120 4T1 and Cisco 7140 8T Cables and Pinouts W Table C 8 _EIA TIA 232 Adapter Cable Signals DTE continued DTE Cable CAB 232M T Shield ground 46 1 Shield ground TxD RxD 41 gt 2 TxD RxD TxD 36 lt 3 RxD RTS CTS 42 gt 4 RTS CTS RTS 35 lt 5 CTS DSR DTR 34 lt 6 DSR Circuit ground 45 7 Circuit ground DCD LL 33 lt 8 DCD TxC NIL 37 lt 15 TxC RxC TxCE 38 lt 17 RxC LL DCD 44 gt 18 LTST DTR DSR 43 gt 20 DTR TxCE TxC 39 gt 24 TxCE Mode 0 50 Shorting group Ground 51 Mode_DCE 52 1 HD high density Table C 9 EIA TIA 232 Adapter Cable Signals DCE DCE Cable CAB 232FC Router End HD 60 Position Plug Netw ork End DB 25 Receptacle Signal Pin Pin Signal Shield ground 46 1 Shield ground RxD TxD 36 lt 2 TxD TxD RxD 41 gt 3 RxD CTS RTS 35 lt 4 RTS RTS CTS 42 gt 5
22. itting and receiving data at rates of up to 155 Mbps bidirectionally The MME and SMI3 interfaces connect to SONET SDH 155 Mbps multimode or single mode optical fiber For SONET SDH multimode and SONET SDH single mode connections use one duplex SC connector see Figure C 12 or two simplex SC connectors see Figure C 13 The simplex and duplex SC connectors are shipped with removable dust covers on each connector Figure C 12 Duplex SC Connector An OC 3 ATM interface cable which is used to connect your router to an external DSU an ATM network is available for use with the MM3 and SMI3 interfaces Cables can be obtained from an outside cable vendor Single mode and multimode cables should perform to the specifications listed in Table C 19 Table C 19 FiberOptic Cable Specifications Standard Maximum Path Length Cabling ISO IEC 9314 3 1 2 miles 2 km all cables ina 62 5 micron core with an connection end to end optical loss of 0 9 dB or 50 micron core with an optical loss of 7 dB IEC 793 2 24 8 mi 40 km for SML and 9 micron core 9 3 mi 15 km for SMI ANSI TIA EIA 492CAAA 24 8 mi 40 km for SML and _ 9 micron core 9 3 mi 15 km for SMI 1 SML single mode long reach 2 SMI single mode intermediate reach I 78 6341 03 Cisco 7100 Series VPN Router Installation and Configuration Guide gg Appendix Cable Specifications HE Cisco 7120 AT3 Cisco 7140 2AT3 Cisco 7120 AE3 Cisco 7140 2AE3
23. minimum transmitter power PT maximum link loss LL and minimum receiver sensitivity PR The worst case analysis provides a margin of error not all of the parts of an actual system will operate at the worst case levels The power budget PB is the maximum possible amount of power transmitted The following equation lists the calculation of the power budget PB PT PR PB 20 dBm 30 dBm PB 10 dB The power margin calculation is derived from the power budget minus the link loss as follows PM PB LL If the power margin is positive the link will work Table C 22 lists the factors that contribute to link loss and the estimate of the link loss value attributable to those factors Table C 22 Link Loss Factors and Values Link Loss Factor Estimate of Link Loss Value Higher order mode losses 0 5 dB Clock recovery module 1 dB Modal and chromatic dispersion Dependent on fiber and wavelength used Connector 0 5 dB I 78 6341 03 Cisco 7100 Series VPN Router Installation and Configuration Guide gg Appendix Cable Specifications HE Cisco 7120 AT3 Cisco 7140 2AT3 Cisco 7120 AE3 Cisco 7140 2AE3 Cisco 7120 SM13 and Cisco 7140 2M M3 Cables Table C 22 Link Loss Factors and Values continued Link Loss Factor Estimate of Link Loss Value Splice 0 5 dB Fiber attenuation 1 dB km After calculating the power budget minus the data link loss the result should be greater than zero Circ
24. nal Pin Pin Signal Shield ground 46 1 Shield ground TxD RxD 11 gt 4 SD TxD RxD 12 gt 22 SD TxC RxC 24 lt 5 ST TxC RxC 23 lt 23 ST RxD TxD 28 lt 6 RD RxD TxD 27 lt 24 RD RTS CTS 9 gt 7 RS RTS CTS 10 gt 25 RS RxC TxCE 26 lt 8 RT RxC TxCE 25 lt 26 RT CTS RTS 1 lt 9 CS CTS RTS 2 lt 27 CS Cisco 7100 Series VPN Router Installation and Configuration Guide ome AppendixC Cable Specifications Cisco 7120 4T1 and Cisco 7140 8T Cables and Pinouts W Table C 10 EIA TIA 449 Adapter Cable Signals DTE continued DTE Cable CAB 449M T LL DCD 44 gt 10 LL Circuit ground 45 37 SC DSR DTR 3 lt 11 ON DSR DTR 4 lt 29 ON DTR DSR 7 gt 12 TR DTR DSR 8 gt 30 TR DCD DCD 5 lt 13 RR DCD DCD 6 lt 31 RR TxCE TxC 13 gt 17 TT TxCE TxC 14 gt 35 TT Circuit ground 15 19 SG Circuit ground 16 20 RC Mode 1 49 Shorting group Ground 48 Ground 51 Shorting group Mode_DCE 52 1 HD high density Table C 11 EIA TIA 449 Adapter Cable Signals DCE DCE Cable CAB 449C Router End HD Netw ork End 60 Position Plug DB 37 Receptacle Signal Pin Pin Signal Shield ground 46 1 Shield ground RxD TxD 28 lt 4 SD RxD TxD 27 lt 22 SD TxCE TxC 13 gt 5
25. ons for transmission speed versus distance Do so at your own risk EIA TIA 232 Connections The router end of all E A TIA 232 adapter cables is a high density 60 pin plug The network end of the adapter cable is a standard 25 pin D shell connector known as a DB 25 that is commonly used for EIA TIA 232 connections Figure C 5 shows the connectors at the network end of the adapter cable Do not use the Cisco Systems provided EIA TIA 232 adapter cable product number CAB 232MT to connect a T1 interface that is configured for DTE mode directly to an NEC NEXTSTAR IE model C4969 MD SAC unit interface that is configured for DCE mode Doing so will keep transmit and receive data signals from being properly exchanged between the two interfaces Instead you must connect an additional intermediate adapter cable with standard EIA TIA 232 DB 25 connectors at both ends from the network end of product number CAB 232MT to the standard EIA TIA 232 DB 25 connector the DCE interface on the NEC NEXTSTAR IE model C4969 MD SAC unit Cisco Systems does not provide this additional cable however its signals and pin assignments are listed in Table C 8 You can use the Cisco Systems provided EJA TIA 232 adapter cable product number CAB 232FC to connect a T1 interface that is configured for DCE mode directly to an NEC NEXTSTAR 1E model C4969 MD SAC unit interface that is configured for DTE mode This cable s pin assignments are listed in Table C 9 Fi
26. re considered to be DTE devices The T3 or E3 serial port has two connectors receive and transmit where you connect the Cisco 75 ohm coaxial cable The 75 ohm coaxial cable Cisco product number CAB ATM DS3 E3 is available only from Cisco Systems it is not available from outside commercial cable vendors Figure C 10 shows the Cisco 75 ohm coaxial cable which is available in 10 foot 3 05 meter lengths only The typical maximum distance between stations for T3 or E3 transmissions is 1300 feet 396 meters For E3 75 ohm connections you must have ferrite beads on the 75 ohm coaxial cable and electromagnetic interference EMI decoupling clips on the receiver end of the cable see Figure C 10 if compliance with European certification standards for emission control is required EN55022 CISPR22 Class B for radiated emission levels Figure C 10 T3 and E3 Serial Port Adapter Cables 75 ohm coaxial cabling O000 S29 29900000 BESSSR SS SERS 39955992559555 Y OS KBE EE Q 2000000 90000 BNC plug 90000 O000 OOOO QOO AYIR Reik FERF RL ACU FERE a RC 5 MT ERE RL ACIK FERF AL CVR EDE D es Jf See OD 858 i D EMI decoupler clip lt Ferrite bead To T3 network equipment The T3 and E3 ports support several types of integrated data service units DSUs Table C 17 lists the features supported Table C 17 Feature Compatibilities
27. ted distance at any given bit rate generally the slower the baud rate the greater the distance All serial signals are subject to distance limits beyond which a signal degrades significantly or is completely lost Table C 7 lists the recommended standard maximum speeds and distances for each serial interface type The recommended maximum rate for V 35 is 2 048 Mbps Table C 7 Recommended Standard Maximum Speeds and Distances for Serial Interfaces EIA TIA 232 Distances EIA TIA 449 X 21 V 35 EIA 530 Distances Rate bps Feet Meters Feet Meters 2400 200 60 4 100 1 250 4800 100 30 2 050 625 9600 50 15 1 025 312 19200 25 7 6 513 156 38400 12 3 7 256 78 Cisco 7100 Series VPN Router Installation and Configuration Guide 78 6341 03 E Appendix Cable Specifications WE Cisco 7120 471 and Cisco 7140 8T Cables and Pinouts Table C 7 Recommended Standard Maximum Speeds and Distances for Serial Interfaces continued EIA TIA 232 Distances EIA TIA 449 X 21 V 35 EIA 530 Distances 56000 8 6 2 6 102 31 1544000 T1 50 15 Balanced drivers allow EIA TIA 449 signals to travel greater distances than EIA TIA 232 signals The recommended distance limits for EI A TIA 449 shown in Table C 7 are also valid for V 35 X 21 and EJA 530 EIA TIA 449 and EIA 530 support 2 048 Mbps rates and V 35 supports 2 048 Mbps rates without any problems we do not recommend exceeding published specificati
28. the type of electrical interface that the cable supports For most interface types the adapter cable for DTE mode uses a plug at the network end and the cable for DCE mode uses a receptacle at the network end Exceptions are V 35 adapter cables which are available with either a V 35 plug or a receptacle for either mode and the EIA 530 adapter cable which is available only in DTE mode with a DB 25 plug at the network end The mode is labeled on the molded plastic connector shell at the ends of all cables except V 35 which uses the standard Winchester block type connector instead of a molded plastic D shell Caution Serial interface cables must be attached correctly or damage to the cable plug will result Attempting to force a cable plug on the 60 pin receptacle can damage the plug See Figure C 3 Cisco 7100 Series VPN Router Installation and Configuration Guide 78 6341 03 E Appendix Cable Specifications WE Cisco 7120 471 and Cisco 7140 8T Cables and Pinouts Figure C 3 Correct Serial Cable Orientation Correct Router port Incorrect cable upside down Router port BS Interface cable 22138 Table C 6 lists the available interface cable options and product numbers for the mode and network end connectors Table C 6 Serial Cable Product Numbers Interface Type Description Product Number EIA TIA
29. tions The router end of all X 21 adapter cables is a high density 60 pin plug The network end of the adapter cable is a standard DB 15 connector Figure C 8 shows the connectors at the network end of the X 21 adapter cable X 21 cables are available as either DTE DB 15 plug or DCE DB 15 receptacle See Table C 14 and Table C 15 for pinouts Figure C 8 X 21 Adapter Cable Connectors TE ae DTE O0000000 D 222022 D mam DCE H1346a Table C 14 X 21 Adapter Cable Signals DTE DTE Cable CAB X21M T Router End HD Netw ork End 60 Position Plug DB 15 Plug Signal Pin Pin Signal Shield ground 46 1 Shield ground TxD RxD 11 gt 2 Transmit TxD RxD 12 gt 9 Transmit RTS CTS 9 gt 3 Control RTS CTS 10 gt 10 Control RxD TxD 28 lt 4 Receive RxD TxD 27 lt 11 Receive CTS RTS 1 lt 5 Indication CTS RTS 2 lt 12 Indication RxC TxCE 26 lt 6 Timing RxC TxCE 25 lt 13 Timing Circuit ground 15 8 Circuit ground Ground 48 Shorting group Mode_2 47 Ground 51 Shorting group Mode_DCE 52 1 HD high density Cisco 7100 Series VPN Router Installation and Configuration Guide ECL Lc Appendix Cable Specifications WE Cisco 7120 471 and Cisco 7140 8T Cables and Pinouts Table C 15 X 21 Adapter Cable Signals DCE DCE Cable CAB X21FC
30. uits whose results are less than zero may have insufficient power to operate the receiver The SONET specification requires that the signal must meet the worst case parameters listed in Table C 23 Table C 23 MM3 and SMI3 Port SONET Signal Requirements Variable Single Mode SML Single Mode SMI Multimode PT 5 dBm 15 dBm 20 dBm PR 34 dBm 31 dBm 30 dBm PB 29 dBm 16 dB 10 dB Multimode Power Budget Example with Sufficient Pow er for Transmission The following is an example multimode power budget calculated based on the following variables Length of multimode link 3 kilometers km Four connectors Three splices Higher order mode loss HOL Clock recovery module CRM Estimate the power budget as follows PB 10 dB 3 km 1 0 dB km 4 0 5 dB 3 0 5 dB 0 5 dB HOL 1 dB CRM PB 10 dB 3 dB 2 dB 1 5 dB 0 5 dB 1 dB PB 2 dB The positive value of 2 dB indicates that this link would have sufficient power for transmission Multimode Power Budget Example of Dispersion Limit Following is an example with the same parameters as the previous example but with a multimode link distance of 4 km PB 10 dB 4 km 1 0 dB km 4 0 5 dB 3 0 5 dB 0 5 dB HOL 1 dB CRM PB 10 dB 4 dB 2 dB 1 5 dB 0 5 dB 1 dB PB 1 dB The value of 1 dB indicates that this link would have sufficient power for transmission But due to the disp
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