Cisco 1 Port OC-3 Multimode ATM
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1. 14859 Ee GRD GED ED CEE E E CC CC cC gi Connecting Cisco ATM Network Modules to the Network Connecting Cisco ATM Network Modules to the Network ATM 0 3 Network Modules Figure 10 ATM OC 3 STM 1 Circuit Emulation Service Multimode Fiber Network Module 0 RX FERF OOF AIS RCLK EN CO CO C WAC a 5 11 ATM OC 3 STM 1 Circuit Emulation Service Single Mode Intermediate Reach Fiber Network Module J C 3 3 E 2 USERPRCOUNTOSRRLASSEL_phooUsTOUUsERCSe ZIRI 1 3788 CES 0 0 TX H H RX FERF OOF AIS RCLK EN VO OOPS CO amp Coco 0 2 3i 3C 3 C 3C oun aun aun lamp lamp lau M 5 Figure 12 ATM OC 3 STM 1 Circuit Emulation Service Single Mode Long Reach Fiber Network Module 2 3 C c2 LsenouRTERUsee rrooUToUaoET PIAT Lr 2521 0 ma LT2. C 3 gt gt 2 2 2 C amp RCLK FERF OOF AIS EN GSC Ga C 9 o gt a ame am 14862 Fiber Optic Transmission Specifications This section describes Synchronous Optical Network SONET specifications for fiber optic transmissions defines the power budget and helps you estimate your power margin for multimode and single mode transmissions This section contains the following information e SONET Distance Limitations Power Budget and Power Margin Link Loss Estimating the Power Margin e Single Mode Transmission SONET Distance Limitations The SONET specification for fiber optic transmission defines two types of fiber single mode and multimode Single mode fiber allows only one bundle of light rays to propagate through the fiber whereas multimode fiber allows multiple bundles entering at different angles Because different bundles referred to as modes travel different distances depending on the entry angle they arrive at the destination at different times modal dispersion Single mode fiber is capable of higher bandwidth and greater cable run distances than multimode fiber Table 7 lists typical maximum distances for single mode and multimode transmissions as defined by SONET Use the calculations described in this section to determine the actual maximum for your network If the d
3. 2008 Cisco Systems Inc All rights reserved Connecting Cisco ATM Network Modules to the Network Connecting Cisco ATM Network Modules to the Network Obtaining Documentation Obtaining Support and Security Guidelines Connecting Cisco ATM Network Modules to the Network 18
4. Connecting Cisco ATM Network Modules to the Network Revised May 1 2008 OL 12815 01 This guide describes how to connect Cisco Asynchronous Transfer Mode ATM network modules to your network It contains the following sections ATM 25 Network Module page 1 ATM T3 and E3 Network Modules page 3 ATM OC 3 Network Modules page 5 Related Documents page 17 Obtaining Documentation Obtaining Support and Security Guidelines page 17 ATM 25 Network Module The ATM 25 network module see Figure 1 provides ATM traffic shaping for use with asymmetric digital subscriber line ADSL uplink speeds and protocol support for permanent virtual circuit PVC environments The network module provides full support for multiprotocol encapsulation over ATM Adaptive Layer 5 RFC 1483 classic IP over ATM encapsulation RFC 1577 and Point to Point Protocol PPP over ATM CISCO Americas Headquarters Cisco Systems Inc 170 West Tasman Drive San Jose CA 95134 1706 USA Connecting Cisco ATM Network Modules to the Network 25 Network Module Figure 1 ATM 25 Network Module ATM 25Mbps ATM 25 _ COCOCOCOCOCO DOOOOWM COCOCOCOCO KO y RxXO O EN ____ COCOCOCOCOCO COCOCOCOCOCO COCO MO OCIA 2C 11705 ATM traffic LEDs Enable LED RJ 45 port Connecting ATM 25 Ports to the Network The ATM 25 port is a standard RJ
5. 12 Connecting Cisco ATM Network Modules to the Network ATM 0 3 Network Modules Figure 18 Installing an SFP Module Stepb Push the module back into the slot until the latch engages When fully inserted only the band around the front of the SFP module should be visible Step6 Remove the plug from the SFP module optical bores and save the plug for future use Step7 Attach the network interface fiber optic cable as described in the Connecting ATM OC 3 Ports to the Network section on page 9 Laser Safety Guidelines ATM OC 3 network modules use a small laser to generate the fiber optic signal Keep the transmit port covered whenever a cable is not connected to it A Warning Because invisible laser radiation may be emitted from the aperture of the port when no fiber cable is connected avoid exposure to laser radiation and do not stare into open apertures Statement 240 The module faceplate carries a Class 1 laser warning label See Figure 19 Connecting Cisco ATM Network Modules to the Network Connecting Cisco ATM Network Modules to the Network 0C 3 Network Modules Figure 19 Class 1 Laser Warning Label CLASS 1 LASER PRODUCT LASERPRODUKT DER KLASSE 1 PRODUIT LASER DE CLASSE 1 PRODUCTO LASER CLASE 1 CLASS 1 LASER PRODUCT PRODUCT LASER DE CLASSE1 LASERPRODUCT DER KLASSE 1 PRODUCTO LASER CLASE 1 ATM 1A OC3MM ILU
6. C TX RX SEE MANUAL BEFORE INSTALLING NETWORK MODULE LP TXCL N C RXCL RXCR RXALM a 4 OOO ele oOo oo gt Oxo oo Co Oooo oo cog o amp Note The ATM T3 network module has a sensitive receiver If you use a short T3 cable it is possible to saturate the receiver leading to bit errors If this occurs we recommend one of the following e Reduce the transmit level of the device attached to the T3 network module Many devices have a line build out LBO configuration setting for this purpose e Insert a 4 dB attenuator on the receive side of the T3 network module Connecting ATM T3 and E3 Ports to the Network Use a coaxial cable to connect the module BNC port to a T3 or E3 network ATM T3 Network Module and ATM E3 Network Module LEDs The ATM T3 network module and the ATM E3 network module have the LEDs shown in Table 2 Table 2 ATM T3 Network Module and ATM E3 Network module LEDs LED Color Meaning EN Green Module has passed its self tests and is available to the router RCLK Green Receive clock has been detected FERF Yellow Far end receive failure OOF Yellow of frame AIS Yellow Alarm indication signal Connecting Cisco ATM Network Modules to the Network Ea Connecting Cisco ATM Network Modules to the Network 0 3 Network Modules ATM T3 E3 Network Module LEDs Table 3 shows the LEDs for the combined ATM T3 E3 network m
7. 45 jack color coded light green Use a straight through modular RJ 45 UTP Category 3 4 or 5 cable or STP Category 1 1A 9 or 9A cable to connect the port to an external ADSL modem See Figure 2 Figure 2 Connecting the ATM 25 Module to an ADSL Modem ATM 25 port RJ 45 Rx PL 29 Coco coco SGoootcu Straight through RJ 45 to RJ 45 cable 11707 ADSL modem Connecting Cisco ATM Network Modules to the Network Connecting Cisco ATM Network Modules to the Network T3 and Network Modules ATM 25 Network Module LEDs Figure 3 shows ATM 25 network module LEDs Figure 3 ATM 25 Network Module LEDs ATM 25Mbps ATM 25 COCOCOCOCOCO COCOCOCOCOCO COCOCOCOCOCO OOGO TX O RKO EN COCOCOCOCOCO COO MCOMOOOcs 11708 IMO rT ATM traffic LEDs Enable LED All network modules have an enable EN LED The enable LED indicates that the module has passed its self tests and is available to the router The ATM 25 network module has the additional LEDs shown in Table 1 Table 1 ATM 25 Network Module LEDs LED Meaning RX Module is receiving ATM traffic TX Module is transmitting ATM traffic ATM T3 and E3 Network Modules ATM T3 and E3 network modules provide T3 and
8. EI TX RX EN FERF OOF AIS RCLK vo Sera Cy 2 COCOC 2 3C 3C CC 3X6 3 C 200 2C 0C 0C OC D 2f 20 5c 5 ATM OC 3 Network Module LEDs Figure 13 and Figure 14 show ATM OC 3 network module LEDs Figure 13 ATM OC 3 Network Module LEDs ATM CLASS 1 LASER PRODUCT PRODUCT LASER DE CLASSE1 1A OC3MM CASERPRODUCTDERLASSEi PRODUCTO LASER CLASE T Lig _ gt 14861 RCLK LED FERF LED OOF LED AIS LED OC 3 Enable LED Connecting Cisco ATM Network Modules to the Network Connecting Cisco ATM Network Modules to the Network 0C 3 Network Modules Figure 14 ATM OC 3 STM 1 Circuit Emulation Service Network Module LEDs J 0 0 0 lt gt A EI CI E VO e OOF ae RCLK EN CO CO Co o 9 CO CO Cacao 31C 310316 3203 C 34 CC C CA COCA CES LED FERF LED OOF LED RCLK LED AIS LED Enable LED LED Color Meaning EN Green Module has passed its self tests and is available to the router RCLK Green Receive clock has been detected FERF Yellow Far end receive failure OOF Yellow Out of frame AIS Yellow Alarm indication signal CES Green An active CES connection is established A
9. Margin The following example calculates a multimode power margin based on these values e Power budget 10 dB SONET worst case specification for multimode fiber e Link length 3 km Four connectors e Three splices e Higher order loss HOL e Clock recovery The power margin is PM PB LL 10 dB 3 km x 1 0 dB km 4 x 0 5 dB 3x 0 5 dB 0 5 dB 1 dB 2 dB The positive result means this link should have enough power for transmission The product of bandwidth and distance is 155 MHz x 3 km 465 MHz km this is within the dispersion limit of 500 MHz km Single Mode Transmission Single mode transmission is useful for longer distances because there is a single transmission path within the fiber and modal dispersion does not occur The maximum receive power for SML is 10 dBm and the maximum transmit power is 0 dBm The SML receiver can be overloaded when using short lengths of fiber Overloading the receiver does not damage it but can cause unreliable operation To prevent overloading an SML receiver insert a minimum 10 dB attenuator on the link between any SML transmitter and the receiver The SMI receiver cannot be overloaded by the SMI transmitter and does not require a minimum fiber cable length or loss The following example of a single mode power margin assumes these values e Power budget 16 dB SONET worst case specification for SMI Two buildings 8 kilometers apart Connections through a patch panel in an inte
10. 0 See Figure 17 The optical interface is provided by an SFP module that is inserted into the SFP port Fiber optic cables to the network are attached to the SFP module The network module has three modes of operation The mode of operation is determined by the SFP module that is used Only SFP modules provided by Cisco should be used in the network module SFP modules that are not provided by Cisco have not been evaluated for reliability or user safety The modes of operation and usable SFP modules are Multimode MM POM OC3 MM gi Connecting Cisco ATM Network Modules to the Network Connecting Cisco ATM Network Modules to the Network ATM 0 3 Network Modules SFP OC3 MM e Single mode intermediate reach SMI POM OC3 SMIR SFP OC3 IRI e Single mode long reach SML POM OC3 SMLR SFP OC3 LRI ATM 0C3 POM Network Module LEDs Table 6 describes the functions of the LEDs on the ATM OC3 POM network module shown in Figure 17 Table 6 ATM OC3 POM LED Functions LED Color Meaning RXCR Green Lit when carrier signal into the network module is present RXCL Green Blinks to indicate packet reception TXCL Green Blinks to indicate packet transmission RXALM Yellow Alarm indication signal EN Green Module has passed its self tests and is available to the router Connecting ATM 0C3 POM Ports to the Network The following sections describe how to remove and install SFP modules an
11. 5 router e NM 1A OC3MM EP provides MM fiber uplink port with enhanced performance See Figure 7 or a similar faceplate e NM 1A OC3SMI EP provides an SMI fiber uplink port with enhanced performance See Figure 8 for a similar faceplate e NM 1A OC3SML EP provides an SML fiber uplink port with enhanced performance See Figure 9 for a similar faceplate The following modules are supported on the Cisco 3600 series routers Connecting Cisco ATM Network Modules to the Network H Connecting Cisco ATM Network Modules to the Network 0C 3 Network Modules e NM 1A OC3MM 1V provides an MM fiber uplink port and circuit emulation service See Figure 10 e NM 1A OC3SMI 1V provides an SMI fiber uplink port and circuit emulation service See Figure 11 e NM 1A OC3SML 1V provides an SML fiber uplink port and circuit emulation service See Figure 12 Circuit emulation service allows the network module to carry voice traffic such as telephone calls and faxes over an ATM network simultaneously with data traffic If you are using the ATM OC 3 STM 1 circuit emulation service network module you need both the network module and a 1 or 2 port T1 or multiflex trunk interface card VWIC 1MFT TI VWIC I1MFT E1 VWIC 2MFT T1 VWIC 2MFT E1 VWIC 2MFT T1 DI or VWIC 2MFT EI DI for a voice connection You can install one multiflex trunk interface card providing up to two voice ports in the ATM OC 3 STM 1 circuit emul
12. E3 ATM connectivity for high bandwidth data applications There are three versions of these network modules the ATM T3 Network Module the ATM E3 Network Module and the ATM T3 E3 Network Module See Figure 4 Figure 5 and Figure 6 These network modules offer full support for multiprotocol encapsulation over ATM Adaptive Layer 5 RFC 1483 classic IP over ATM encapsulation RFC 1577 Point to Point Protocol PPP over ATM and LAN Emulation LANE Up to 1024 virtual circuits VCs are supported on the ATM T3 E3 network modules Figure 4 ATM Network Module with T3 Interface ATM 1A T3 CD COD CD CD CD CD CD CD CD CD SEE MANUAL BEFORE INSTALLING NETWORK MODULE C _ amo __ 0 C 2 C 2 C 2 2 rer g 8 nak ee COCOCOCOCOCO COCOCOCOCOCO e C 30546 Connecting Cisco ATM Network Modules to the Network H Connecting Cisco ATM Network Modules to the Network and Network Modules Figure 5 ATM Network Module with E3 Interface U ATM 1A E3 CD COD CD CD CD CD CD CD CD CD co co SEE MANUAL BEFORE INSTALLING NETWORK MODULE Amo TX RX C 2 B C 2 C B 2 FERF OOF AIS Rc k EN C CC ce coQi s COCOCOCOCOCO COCOCOCOCOCO COCCOCOCOCO C9CDCOCDOODCO e e Figure 6 ATM Network Module with one T3 E3 Interface 1 CO CO CO CO CO COCOCOCOCOCOCOCOCOCOCOCOCOCOCOCO co C C ATMO GN C C C C
13. TM OC 3 STM 1 circuit emulation service network module only Hardware Compatibility with Cisco 3620 Routers Cisco 3620 routers require a minimum PCMCIA controller revision level to recognize ATM OC 3 network modules otherwise an error message appears Cisco 3620 routers installed in the field before April 1999 contain a Revision C PCMCIA controller which is not compatible with these modules Starting in April 1999 all Cisco 3620 routers shipped from the factory include Revision E PCMCIA controllers which are fully compatible with all three ATM OC 3 network modules You can identify the version of PCMCIA controller in your Cisco 3620 router by entering the show pci hardware command in privileged EXEC mode or by examining the part number on the motherboard Supported versions are shown in Table 4 Table 4 Cisco 3620 Router Versions for ATM OC 3 Network Modules Does Not Support ATM OC 3 Supports ATM OC 3 PCMCIA controller 0x22 OxE2 0x20 OxEO Motherboard 73 1850 10 and older 73 1850 11 or newer The output of the show pci hardware command looks similar to this Router show pci hardware CLPD6729 registers 0x00 Chip Revision 0x82 Ox1E Misc Control 2 0x08 Ox1F Chip Information OxE2 Connecting Cisco ATM Network Modules to the Network 8 Connecting Cisco ATM Network Modules to the Network 0 3 Network Modules CES Cross Connection on the Cisco 3660 Router The C
14. ation service network module If a multiflex trunk interface card is not installed the ATM OC 3 STM 1 circuit emulation service network module continues to perform data routing functions Note 1 or 2 port T1 or E1 multiflex trunk interface cards that support G 703 VWIC 1MFT G703 VWIC 2MFT G703 are not supported in ATM OC 3 STM 1 circuit emulation service network modules Figure 7 ATM OC 3 Multimode Fiber Network Module CLASS 1 LASER PRODUCT PRODUCT LASER DE CLASSE1 LASERPRODUCT DER KLASSE 1 PRODUCTO LASER CLASE 1 a e gt 2 2 C gt C 3 2 T T RCLK FERF OOF AIS 1 2 2 ccc JC C 2 coca 2C ICDC 14860 Figure 8 ATM OC 3 Single Mode Intermediate Reach Fiber Network Module CLASS 1 LASER PRODUCT PRODUCT LASER DE CLASSE1 LASERPRODUCT DER KLASSE 1 PRODUCTO LASER CLASE 1 C A X 2 gt k A E Ji C gt I A I RCLK FERF OOF Als EN CO CO CO CO Co m COCCLCC 2 gt 2 Figure 9 ATM OC 3 Single Mode Long Reach Fiber Network Module ATM 1A OC3SML CLASS 1 LASER PRODUCT PRODUCT LASER DE CLASSE1 LASERPRODUCT DER KLASSE 1 PRODUCTO LASER CLASE 1 C gt gt 2 2 2 2 gt Ss amp RCLK FERF OOF AIS EN
15. connection socket on the chassis or to a bare metal surface on the chassis or frame Disconnect the network fiber cable from the SFP module connector Remove the SFP module from the slot a Using your thumb and forefinger grip the colored latching band on the front of the SFP module b Gently push the latching band back toward the SFP port You may hear a click or feel the SFP module disengage from the holding latch S Note Not all SFP modules have the same kind of latching mechanism c While still holding the latching band pull the SFP module forward and out of the slot Set the SFP module aside on an antistatic surface Installing an SFP Module Step 1 Step 2 Step 3 Step 4 Use the following procedure to install an SFP module Attach an ESD preventive wrist strap to your wrist and between yourself and an unpainted chassis surface Verify that you have the correct SFP module for your installation Check the part number and distance information on the SFP module label e Alternatively if the distance information is not on the label use the show contr pos x y command to display the information after the SFP module is installed Align the SFP module with the slot so that the label is facing away from the handle Holding the module at the latching band with your thumb and forefinger insert the SFP module into the slot on the SFP port See Figure 18 Connecting Cisco ATM Network Modules to the Network
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17. d how to connect the ports on a module to the network Handling an SFP Module Before handling an SFP module observe the following guidelines e SFP modules are static sensitive To prevent electrostatic discharge ESD damage follow your normal board and component handling procedures e SFP modules are dust sensitive When storing an SFP module or when a fiber optics cable is not plugged into the connector always keep plugs in SFP module optical bores S Note The most common source of contaminants in the optical bores is debris picked up on the ferrules of the optical connectors Use alcohol swabs or lint free absorbent wipes to clean the ferrules of the optical connector Removing an SFP Module The following procedure describes removing an SFP module from the network module Connecting Cisco ATM Network Modules to the Network HEINE Connecting Cisco ATM Network Modules to the Network 0 3 Network Modules Warning A Caution Step 1 Step 2 Step 3 Step 4 Ultimate disposal of this product should be handled according to all national laws and regulations Statement 1040 You can remove and install SFP modules with power on to the system however we strongly recommend that you do not remove or install an SFP module with optical fiber cables attached To remove an SFP module perform the following steps Attach an ESD wrist strap to your wrist and to the ESD
18. from the following causes e Passive components Attenuation caused by cables cable splices and connectors is common to both multimode and single mode transmission Attenuation is significantly lower for optical fiber than for other media e Chromatic dispersion The signal spreads in time because of differing speeds of the different wavelengths of light e Modal dispersion In multimode fiber the signal spreads in time because of the different propagation modes e Higher order mode loss HOL This loss results from light radiated into the fiber cladding e Clock recovery at the receiver This recovery consumes a small amount of power The power lost over the data link is the sum of all these losses Table 9 gives an estimate of the amount of loss attributable to each cause Table 9 Link Loss Causes and Amounts Cause Amount of Loss Fiber attenuation SM 0 5 dB km MM 1 dB km Splice 0 5 dB Connector 0 5 dB Modal and chromatic dispersion Depends on fiber and wavelength Connecting Cisco ATM Network Modules to the Network H Connecting Cisco ATM Network Modules to the Network ATMOC 3 Network Modules Table 9 Link Loss Causes and Amounts Cause Amount of Loss Higher order mode losses 0 5 dB Clock recovery 1 dB 1 Dispersion is usually negligible for single mode fiber For multimode fiber the product of bandwidth and distance should be less than 500 MHz km Estimating the Power
19. isco 3660 router can deliver traditional PCM encoded 64 kbps circuit based voice over the ATM OC 3 CES network module To use this functionality the multiservice interchange card MIX must be installed on the Cisco 3660 router T1 E voice channels on NM xFE2W and NM HDV network modules can be transported across the MIX module to ATM OC 3 network modules NM 1A OC3XX 1V over an ATM network PVC based permanent virtual circuit CES allows service providers to quickly deliver local or long distance voice while SVC switched virtual circuit capabilities ensure that these services are optimized for maximum profitability To install the MIX card see the Installing the Multiservice Interchange Card in Cisco 3660 Routers document To configure CES see the OC 3 STM 1 ATM Circuit Emulation Service Network Module document Connecting ATM OC 3 Ports to the Network S To connect an ATM OC 3 network module to the network insert a fiber optic cable with one duplex SC connector see Figure 15 or two simplex SC connectors see Figure 16 into the ATM interface Note amp Some network modules are shipped with a dust plug to protect this interface Pull to remove it Figure 15 Duplex SC Connector Figure 16 Simplex SC Connector Note Cisco does not sell these fiber optic cables but they are available from many cable vendors Cables should perform to the specifications listed in Table 5 Connecting Cisco ATM Network Mod
20. istance between two connected stations exceeds this limit transmission can become unreliable Table 7 Typical SONET Maximum Fiber Optic Transmission Distances Transceiver Type Maximum Distance Between Stations MM 1 5 miles 2 km SMI 9 miles 15 km SML 28 miles 40 km Connecting Cisco ATM Network Modules to the Network Connecting Cisco ATM Network Modules to the Network ATM 0 3 Network Modules Power Budget and Power Margin Link Loss Proper operation of an optical data link depends on modulated light reaching the receiver with enough power to be demodulated The power budget PB is the difference between transmitter power PT and receiver sensitivity PR For instance if transmitter power is 20 dB and receiver sensitivity is 30 dB the power budget is 10 dB PB PT PR PB 20 dB 30 dB PB 10 dB The SONET specification requires that the signal meet the worst case requirements listed in Table 8 Table 8 SONET Signal Requirements MM SMI SML Transmitter power 20 dBm 15 dBm 5 dBm Receiver sensitivity 30dBm 31 dBm 34dBm Power budget 10dBm 16dBm 29 dBm The difference between the power budget and the link loss LL is called the power margin PM If the power margin is zero or positive the link should work If it is negative the signal may not arrive with enough power to operate the receiver Power loss over a fiber optic link arises
21. odule Table 3 ATM T3 E3 Network Module LEDs LED Color Meaning TXCL Green Cell transmitted RXCL Green Cell received RXALM Yellow Alarm indication signal RXCR Green Carrier present Loopback LED Green Loopback ATM OC 3 Network Modules ATM OC 3 network modules provide full 155 Mbps ATM connectivity including STS 3c and STM 1 framing for high bandwidth data applications and voice data integration applications Characteristics and installation of these modules are described in the following sections e OC 3 Network Modules for Cisco 3600 and Cisco 3700 Series Routers page 5 e ATM OC3 POM Network Module for Cisco 3800 Series Routers page 10 Laser Safety Guidelines page 13 e Fiber Optic Transmission Specifications page 14 0C 3 Network Modules for Cisco 3600 and Cisco 3700 Series Routers This section describes the following OC 3 Optical Carrier level 3 network modules for most Cisco 3600 and Cisco 3700 series routers S Note ATM OC 3 network modules are not supported by the Cisco 3631 router The following modules are supported on the Cisco 3600 series routers and the Cisco 3725 router e NM 1A OC3MM provides a multimode MM fiber uplink port See Figure 7 e NM 1A OC3SMI provides a single mode intermediate reach SMI fiber uplink port See Figure 8 e NM 1A OC3SML provides a single mode long reach SML fiber uplink port See Figure 9 The following modules are supported on the Cisco 374
22. rvening building with a total of 12 connectors PM PB LL 16 dB 8 km x 0 5 dB km 12 x 0 5 dB 6 dB The positive value means this link should have enough power for transmission Connecting Cisco ATM Network Modules to the Network 16 Connecting Cisco ATM Network Modules to the Network Related Documents W Related Documents For additional information see the following documents and resources Related Topic Document Title Regulatory compliance and safety Cisco Network Modules and Interface Cards Regulatory Compliance and Safety information Information http www cisco com en US docs routers access interfaces rcsi TOHrcsi html Cisco IOS software website and reference Cisco IOS Software documentation http www cisco com web psa products index html c 268438303 Obtaining Documentation Obtaining Support and Security Guidelines For information on obtaining documentation obtaining support providing documentation feedback security guidelines and also recommended aliases and general Cisco documents see the monthly What s New in Cisco Product Documentation which also lists all new and revised Cisco technical documentation at http www cisco com en US docs general whatsnew whatsnew html CCDE CCENT Cisco Eos Cisco Lumin Cisco StadiumVision the Cisco logo DCE and Welcome to the Human Network are trademarks Changing the Way We Work Live Play and Learn is a service mark an
23. ules to the Network H Connecting Cisco ATM Network Modules to the Network 0C 3 Network Modules S Table 5 Fiber Optic Cable Specifications Standard Maximum Path Length Cabling ISO IEC 9314 3 1 24 miles 2 km all cables 62 5 micron core with an in a connection end to end opticalloss of 0 to 9 dB or 50 micron core with an optical loss of 7 dB IEC 793 2 27 9 miles 45 km for SML 9 micron core and 9 3 miles 15 km for SMI ANSI TIA EIA 492 27 9 miles 45 km for SML 9 micron core CAAA and 9 3 miles 15 km for SMI Note A single fiber link should not mix 62 5 and 50 micron cable ATM 0C3 POM Network Module for Cisco 3800 Series Routers gt Caution The NM 1A OC3 POM network module provides a high performance fiber uplink port for Cisco 3800 series integrated services routers See Figure 17 Supported platforms are e Cisco 3825 integrated services router e Cisco 3845 integrated services router Figure 17 ATM OC3 POM Network Module LASS 1 LASER PRODUCT PRODUCT LASER DE CLASSE1 LASERPRODUCT DER KLASSE 1 PRODUCTO LASER CLASE 1 ATM NM 1A OC3 POM C J 2 J gt C p X gt C gt C gt RXCR RXCL TXCL RXALM EN CO CO COCO Co CC C CC CC C e a CC CC 127722 The ATM interface is the small form factor pluggable SFP optical port labeled ATM
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