ELF2-MEEV User`s manual
Contents
1. Contact Net 1 RX 2 RX 3 4 TX 5 TX 6 7 GND 8 GND Table 2 Socket E1B 10 ELF2 MEEV User s manual Contact Net Direction 1 GND 2 3 4 RTS output 5 CTS input 6 DTR output 7 GND 8 CD input 9 GND 10 RxCa input 11 RxCb input 12 TxCa input 13 TxCb input 14 RxDb input 15 RxDa input 16 GND 17 18 19 TxDa output 20 TxDb output 21 22 23 24 25 26 Table 3 Socket V 35 DTE mode Note IC V35 DTE cable should be used in DTE mode 11 ELF2 MEEV User s manual Contact Net Direction 1 GND 2 3 4 CTS output 5 RTS input 6 CD output 7 GND 8 DTR input 9 GND 10 11 12 TxCa input 13 TxCb input 14 TxDb input 15 TxDa input 16 GND 17 18 19 RxDa output 20 RxDb output 21 RxCa output 22 RxCb output 23 TxCa output 24 TxCb output 25 26 Table 4 Socket V 35 DCE mode Note IC V35 DCE cable should be used in DCE mode Contact Net Direction 1 RXD input 2 TXD output 3 GND 4 GND 5 6 Table 5 Console socket 12 ELF2 MEEV User s manual 4 Multiplexer configuration 4 1 Console attaching The console port is connected to the serial port of PC by adapter cable RJ 11 gt DB 9 Multiplexer is controlled by terminal program wi2. 4 3 General settings Configuration Common Relay turn on or turn off the bypass relay When turned off the output Ela signal is connected to the input E1b signal and the input Ela signal is connected to the output Elb signal When turned on Ela and Elb signals are connected to the ports of the multiplexer Configuration Common Drop insert turn on or turn off drop insert mode If drop insert mode is off the multiplexer is function like interface converter between ports Ela and V 35 port Elb is not used If drop insert mode is on data stream from V 35 port is received and transmitted through the Ela port Data timeslots are defined in the Ela port submenu Non data timeslots from the Ela port are routed to the Elb port Configuration Common Swap A B swap Ela and Elb sockets In the state On ports Ela and Elb are exchanged that is equivalent cable swapping in Ela and Elb sockets In this case data transmission goes through port E1b 4 4 Ela port configuration Configuration E1 Framing turn on framed mode of the Ela port In the framed mode bit stream is formatted according the recommendation ITU G 704 Port V 35 data is incapsulated to the defined El timeslots with data rate Nx64 kbit s N is number of used timeslots Timeslot 0 is used for synchronization anyway In the unframed mode V 35 port data is incapsulated to the unformatted G 703 stream with fixed data rate 2048 kbit s Configuration E1 MultiFraming
3. turn on or turn off CAS multiframe in the timeslot 16 The multiframe generation is used only for compatibility with some telephone equipment This mode is not impact on the data transmission capabilities of the multiplexer Configuration E1 Line code line code settings AMI or HDB3 Configuration E1 Clock source line synchronization setting Line synchronize on received Ela signal slave Internal synchronize on internal clock source master Configuration E1 Timeslots define timeslots used for data transmission data timeslots are marked by symbol Configuration E1 ts16 ABCD hex digit 0 f which is define ABCD bits in CAS multiframe ABCD bits defined here are inserted in the timeslot 16 if it is not used for data transmission Configuration E1 CRC4 turn on or turn off CRC4 generation in the transmit direction 14 ELF2 MEEV User s manual 4 5 Elb port configuration Elb port is used only in drop insert mode There are no special configuration options for this port While enabled Elb works in the framed mode and synchronized to line slave Line coding AMI HDB3 and timeslots settings for port Elb are used the same as for port Ela 4 6 V 35 port configuration Configuration V35 DTE turn on or turn off DTE mode of the V 35 port In DTE mode data synchronization signals TxC RxC are inputs and they are formed by external equipment DTE mode can be used for connecting modem or other mul
4. Configuration E1 CRC4 on For the Elb port CRC4 is not calculated as E1b output stream is equivalent to the input Ela stream On this reason CRC4 on Elb output is calculated by equipment attached to the Ela input 6 4 CAS signaling Multiplexer is able to form CAS super frame in the timeslot 16 with fixed ABCD bits CAS signalization is used by some telephone protocols like R2 For correct work of telephone switches and PBX attached to the common El channel with multiplexer data timeslots must be accompanied by the neutral state code in the timeslot 16 The neutral state code should correspond to the given telephone protocol To turn on CAS super frame set Configuration E1 MultiFraming menu to state on ABCD bits code is defined in the Configuration E1 ts16 ABCD menu In the interface converter mode ABCD bits are formed in timeslot 16 for channels 1 15 17 31 In the drop insert mode ABCD bits are formed only for data channels For other channels ABCD bits are passed without changes i e they are formed by equipment attached to the E1b port Anyway CAS signalization is formed by the multiplexer only if timeslot 16 is not used for data transmission In opposite case CAS super frame and ABCD bits are absent in El framing CAS super frame and ABCD bits are not used on the receive side In the drop insert mode CAS signaling is passed from the Ela port to Elb port transparently If multiplexer is set to the drop insert mode and telephone equipmen
5. are not symmetrical data received and transmitted only through port El A Port E1B is used only for voice timeslots Port V 35 can be set to DTE or DCE modes independently of multiplexer mode In the DCE mode port V 35 forms signals of synchronization for an external device In DTE mode port V 35 receive synchronization signals from an external device Relay is intended for direct switching ELA and E1B ports in case of power fail If relay is turned off the ElA receiver is connected to the E1B transmitter the E1B receiver is connected to the EIA transmitter So in the drop insert mode El line will function even without multiplexer power In the interface converter mode relay can isolate El port from line ELF2 MEEV User s manual 2 Specifications 2 1 General Parameter Value dimensions 140x110x35 mm weight without power source 0 35 kg power consumption 5 w ambient temperature OT 5 C no 45 C storage temperature OT 40 C no 70 C humidity 80 or less power voltage on DC socket 15V 20 2 2 Ela Elb ports parameters Parameter Value socket type RJ45 8 pins line type symmetrical twisted pair 120 Ohm impulse voltage 3 V 10 data rate 2048 kbit s 50 ppm coding AMI HDB3 signal attenuation Ela 40 16 signal attenuation E1b 6 16 standarts ITU G 703 G 704 G 706 G 732 G 823 impulse fo
6. mode multiplexer is terminating El equipment with internal synchronization E1 master or data line synchronization El slave ELF2 EIA V 35 RxC TxC Figure 8 E1 slave synchronization ELF2 EIA V 35 RxC TxC Figure 9 E1 master synchronization ELF2 MEEV User s manual 6 2 Drop insert mode If Configuration Common Drop insert is on multiplexer works in drop insert mode In this case both El port are used Timeslots switching scheme is shown on the Figure 10 Figure 10 Drop insert switching Ela and Elb ports are set to the drop insert mode Timeslots 2 3 4 are used for data transmission in this example In the Ela gt Elb direction El stream is passed without changes Data timeslots are extracted from El stream and pushed to the V 35 port In the Elb gt Ela direction timeslots 2 3 4 coming from Elb port are ignored Multiplexer inserts V 35 data in their place Other timeslots are passed without changes Synchronization scheme in the drop insert mode is shown on Figure 11 ELF2 ElA V 35 RxC TxC EIB Figure 11 Drop insert mode 19 ELF2 MEEV User s manual 6 3 CRC4 handling On receive CRC4 is checked in both Ela and Elb streams independently of port mode Result of CRC4 comparing is shown in the port status field LOC Invalid CRC4 in the input El stream is not affects frame synchronization On transmit CRC4 is calculated for Ela port if corresponding mode is set
7. ELF2 MEEV E1 V 35 multiplexer User s manual Software release 1 11 ELF2 MEEV User s manual Attention It is not recommended to use the multiplexer on physical lines without lightning protectors ELF2 MEEV User s manual PARABEL ltd ALL RIGHTS RESERVED ELF2 MEEV MULTIPLEXER USER S MANUAL RELEASE 1 11 MAY 2005 PARABEL LIMITED P O BOX 126 NOVOSIBIRSK 90 RUSSIAN FEDERATION Web eng parabel inc ru Email info parabel inc ru Phone 7 3832 138707 Fax 7 9139139603 ELF2 MEEV User s manual CONTENTS FIGURES 55 nt ita 5 TABLES E a 5 Te aLaaa LE CUO wasan haa Oa AI E 6 2a Specifications wie asa nce sais E a asses AAA AAA AA 8 DN Genera A O 8 2 2 Bila Elb ports parameters uti riadas 8 2 3 IO PMA i 8 2 4 Console port parameters AS a da 8 3 Installation ofthe multiplexet suriin A A a E EN a ga a a a Lae a ees 9 3 1 Front Panel Controls Connectors and Indicators iii 9 3 2 DOCKETS descriptio A ET 10 4 Multiplexer configuratore oi Da AA NA OSA AAA E N teas 13 dli Console O AN 13 4 2 The mai configuratii MENU iii ral 13 4 3 General Se a a 14 44 A dan a a tait 14 45 Elbport configuration gore EE ost da td o e dd 15 AIN Part CONMOULALON A AA seg AN A A ee acs Ma 15 4 7 Testing TOUS ss iraksasa ayan An Na NENGA NA a 15 5 Monitoring the multiplexer POS da 17 6 FUMCEOM ALES Crip tien ss sas ese in a GN Aa re Aa Be ade NA AKE A 18 6 1 Lhe titertace Converter MOUS altar 18 6 2 Drop insert m
8. are based on HDLC for example PPP FR Cisco HDLC Start and end of the HDLC frame are marked by flag 0x7E octet The pause between packets is consist of flags also Except marking frame edge flags are not transfer useful information and can be deleted or inserted without doubt Multiplexer deletes flags if FIFO is full on 75 of length or more Flag deletion is stopped when FIFO is full on 50 Multiplexer inserts flags if FIFO is empty on 25 of length or less Flag insertion is stopped when FIFO is full on 50 Bit rate alignment is correct in case when synchronization frequencies on El and V 35 ports are differed not more then value dF NF MTU 1 where MTU maximum packet length octets NF number of flags between packets except stop flag MTU and NF are defined by router connected to data channel Wide used values are MTU 1500 and NF 1 In this case dF 666 ppm that is well less then typical frequency deviation in the telecom equipment 100 ppm 21 ELF2 MEEV User s manual 7 Upgrading firmware For upgrading the multiplexer firmware do the following 1 Download the multiplexer firmware 2 Connect console cable and reset multiplexer 3 Program firmware by command flashrs232 i dev ttyS0 w f elf bin where elf bin firmware file This command programs firmware through PC com1 4 Check firmware release String Firmware ELF2 MEEV 2 E1 V 35 0x0 Revision XXX must present in the menu headin
9. de 12 Table 6 Stans OF EA Ponts asno 17 Table TIN IN DOr Stats A A AA awed 17 ELF2 MEEV User s manual 1 Introduction Multiplexer ELF2 MEEV can be used on the primary El channels as TDM multiplexer interface converter or drop insert multiplexer As distinct from competitor products the ELF2 multiplexer has the following advantages e Port V 35 has mode of DTE emulation so other multiplexers or modems can be attached to V 35 port without risk of clock slip e The embedded elastic buffer compensates difference in data rates on V 35 port e The second El port can be used in drop insert configurations and daisy chain connections of the ELF multiplexers e The extended capabilities of CAS signalization in timeslot 16 The multiplexer ELF2 MEEV has the following physical ports e Digital port V 35 with DTE or DCE modes e Port E1A framed unframed drop insert e Port E1B framed unframed drop insert e Console port RS232 interface The block schematics of the multiplexer is presented on Figure 1 Control amp status Figure 1 ELF2 block schematics Console RS232 ELF2 MEEV User s manual The multiplexer supports two working modes interface converter mode and drop insert mode In the interface converter mode port V 35 and port ElA are used for data transmission Port E1B is not used Input signal of the ElA port connected to the de framer A where it is processed according to ITU recommendations G 703
10. e present FrErr Frame Errors XX YYYY XX 8 bit counter of frame errors YYYY 16 bit counter of CRC4 errors Table 6 Status of El ports Notes 1 In the unframed mode LOF LOM LOC is not errors 2 To refresh the status press space bar on keyboard 3 To reset error counters choose Test E1_A Freq menu of the corresponding El port Status if the V 35 port is displayed in the V 35 status in the main menu heading The status field legend is shown in Table 7 Field Value Comment DTR CD On DTR signal CD in DTE mode is active Off DTR signal CD in DTE mode is not active RTS CTS On RTS signal CTS in DTE mode is active Off Curman RTS CTS in DTE mode is not active Table 7 V 35 port status 17 ELF2 MEEV User s manual 6 Functional description 6 1 The interface converter mode If Configuration Common Drop insert is off multiplexer works in the interface converter mode between El and V 35 port In this mode data from V 35 port is incapsulated to Ela stream Data streams in V 35 port and Ela port are considered as synchronous bit streams Bit order in the V 35 stream is corresponds to the Ela stream bit order E1b port is not used In the converter mode Ela port can be set to unframed mode Configuration E1 Framing off with data rate 2048 kbit s In framed mode Configuration E1 Framing on data rate is Nx64 kbit s where N number of data timeslots In the converter
11. g 5 Multiplexer is ready for work 8 Multiplexer delivery Multiplexer is shipped with the following accessories e Multiplexer 1 e Console cable RJ11 DB9 1 e CD disk with documentation 1 The following accessories can be shipped separately e Power source AC 220V e Power source DC 36 72B e V 35 cable IC V35 DTE e V 35 cable IC V35 DCE 9 Package Multiplexer is packaged to the carton box with dimensions 26x21x6 5 cm 22 ELF2 MEEV User s manual Appendix A Applications Nia ELF El El ELF Figure 13 Connecting two LAN over SDH ELF2 MEEV User s manual FR Fe KS gs SS PBX SA EIB EIA ElA EIB ELF ELF NO V 35 Router Router Figure 14 Using drop insert mode 24 ELF2 MEEV User s manual El ELF2 V 35 DTE DSL line Nx64 kbit s Figure 15 Last mile with DTE mode and external DSL modem 25
12. ode usine art in ga eben vids ld oa boca tien a had ga kaag ga bak a ee 19 Gp HC RE handling Se ed dd a 20 CA OA SA a a ee nla reat 20 6 5 DTE emulation mode of V 35 PO a A indie 20 T Upgrading A dl do 22 IS A A O A NG nes 22 9 PACKAGE tt EE EEEE 22 Appendix AV TA DD HC TEINS ld di nee 23 ELF2 MEEV User s manual FIGURES Pipur J ELEZ BIOCRSCH MANOS a A dd a adan ng aa waah 6 Fisure 2 Drop msert MOS A Ata saw ty ase sas pao tn Sean nate on dard nae Mea ees 7 Fig re 3 Frontpanelen a Cae ia ga NANG aa ne a ae cen vk Cae 9 PIO panel sasa asa a na aa aa gan a A a a a a ta E aga a ee 9 Figure 5 The main mens A ag a a E yaa ena ata 13 Fipute 6 LOOP ka EEN GG AE Ana KAGAN A GAGANA Ng aa a kaa a a TAN Ga aana Pas ng ANG 15 Figure 7e BS LOOP AINE ana aaa a ng 8 A Naga a en it ana KN le ag a a GG Nad 16 Figure 8 El slave Synchronization sara dd A id di 18 Figure 9 E master Syme hon il ti Adan 18 ta O 19 Figure Ll IOP MS MO adi 19 Fours le DTE mode A Dacia 20 Figure 13 Connecting two LAN over SDH iii ii a tdi 23 Figure 14 Using dr O IP 24 Figure 15 Last mile with DTE mode and external DSL modem ooococcnoccnocononnnonnoncnnccononononanonnconncnnccnnoos 25 TABLES Table l Socket EIA n sa AS nn em ee Ne 10 Ta ble 2 Socket BUB iii A AR A A EA A trad 10 Table 3 Socket V39 AA a ner 11 Table Socket V 33 DCE MI latente das AN TAN NG DEREK ANA E 12 Table Dy CONSOLE SORT RUE hall e as aes ag a NEK EN atte aa do nse aa TEA a
13. rm rec G 703 jitter rec G 823 frame structure rec G 704 2 3 V 35 port parameters Parameter Value socket type 26 pin DB type mode synchronous data rate kbit s Nx64 electrical parameters of signals rec ITU V 28 105 107 109 electrical parameters of signals rec ITU V 35 103 104 113 115 coding NRZ 2 4 Console port parameters RS232 Parameters Value mode asynchronous 8N1 data rate kbit s 38400 flow control no electrical parameters of signals rec ITU V 28 ELF2 MEEV User s manual 3 Installation of the multiplexer 3 1 Front Panel Controls Connectors and Indicators There is following controls on the front panel Reset button Power led Ethernet 100 Mbit led Ethernet2 link led Ethernet link led El led port a El a El led port b E1 b E3 led Console socket RJ 11 ELF2 CCI MOCA CII 544 Console Figure 3 Front panel There is following sockets on rear panel e Twisted pair Ethernet socket RJ 45 e Twisted pair Ethernet socket RJ 45 channel 2 e Port V 35 socket 26 contacts DB type e EIA socket RJ 45 EIB socket RJ 45 e DC input socket DC El B El A V 35 Ethernet2 Ethernet Made in Russia S N Figure 4 Rear panel is not used in this multiplexer model ELF2 MEEV User s manual 3 2 Sockets description Contact Net 1 RX 2 RX 3 4 TX 5 TX 6 7 GND 8 GND Table 1 Socket E1A
14. t use common channel signaling CAS super frame must be turned off Configuration E1 MultiFraming off 6 5 DTE emulation mode of V 35 port DTE emulation mode permits connecting DCE devices to the V 35 port of the multiplexer for example modems multiplexers TDM switches The signal scheme of external modem attaching is shown on the Figure 12 Synchronization signals TXC and RXC of the V 35 port are formed by modem and connected to ELF2 inputs El port synchronization is locked to the receive El stream So multiplexer is synchronized by two independent sources modem and El line V 35 FIFO Flag DCE El 256 bits den framer evice RI a vie le FIFO Drop insert 256 OnT Multiplexer will works correctly if data rate in the both ports will be equivalent On this reason El port in Figure 12 DTE mode example this example must use two timeslots for data transmission 128 kbis s Note that data from El framer is pushed to the FIFO not evenly in time but in 16 bit packages with 125 us period and 2048 kbit s rate 20 ELF2 MEEV User s manual FIFO smooth data stream from the El framer FIFO length is 256 bits that guarantee correct FIFO behavior with any timeslots combination FIFO is also participates in bit rate alignment Bit rate alignment mechanism is based on the HDLC flags manipulation It is supposed that data transmitted on the El channel is organized to HDLC frames Most of the modern data link protocols
15. th parameters 38400 8b 1s np flow control off use Teraterm for example 4 2 The main configuration menu After power on or reset the multiplexer prints main menu on the console and waits input from user The multiplexer is configured by modification of parameters in hierarchical menus After configuration is finished settings can be saved in the flash memory Screen is divided to two parts There is the following information in the upper screen part e Software release number e Firmware release number e The main configuration settings and line status The following menu is resided in the lower screen part see Figure 5 ELF2 MEEV monitor v1 13 08 04 2005 Updates http parabel inc ru Firmware ELF2 MEEV 2 E1 V 35 0x0 Revision 0x2 El A is LongHaul El B is ShortHaul Drop Insert 0ff Swap Off DTE Off El A Cfg Framing 0n MultiFraming 0n Line code HDB3 Clock Internal El A status LOS 0n LOF 0n LOM On LOC 0ff RAIS 0ff FrErr 0 0 El B status LOS 0n LOF 0n LOM On LOC 0ff RAIS Off FrErr 0 0 V35 status DTR CD 0ff RTS CTS 0ff Tog o PO A A T OT 3 Timeslots El A HEHEHE HEHEHE HH 1 Configuration gt gt 3 Test gt gt 9 Reset Figure 5 The main menu To choose a submenu press keys 1 9 To abandon submenu press key 0 Other keys are ignored 13 ELF2 MEEV User s manual
16. tiplexer to V 35 port If DTE mode is turned off synchronization signals TxC and RxC are outputs and they are formed by the multiplexer Configuration V35 Inverse clock inverse data synchronization signal RxC DCE mode only This option is used for attaching non standard equipment Usually this option is off Configuration V35 Inverse data inverse data signals TxD RxD This option is used for attaching non standard equipment Usually this option is off 4 7 Testing modes Test E1 Lloop turn on internal loopback on the corresponding El port Figure 6Figure 6 El Tx Figure 6 Lloop mode 15 ELF2 MEEV User s manual Test E1 Rloop turn on remote loopback on the corresponding El port Figure 7 Tx El hk Rx Figure 7 Rloop mode Test E1 TAOS send all ones alarm signal on El port Test E1 Freq measure and print El carrier frequency relative to internal oscillator ELF2 MEEV User s manual 5 Monitoring the multiplexer ports Status of the El port is displayed in the El status string in the main menu heading The status field legend is shown in Table 6 Field Meaning Values Comment LOS Lost Of Signal On No El signal carrier Off El signal present no alarm LOF Lost Of Frame On No G 704 frame detected Off G 704 frame present LOM Lost Of Multiframe On CAS multiframe absent Off CAS multiframe present LOC Lost Of CRC4 On CRC4 frame absent Off CRC4 fram
17. u G 704 Extracted in the de framer timeslots are sent to the receiver slip buffer From the slip buffer data is transmitted to digital port V 35 In the other direction data from V 35 port is pushed to the transmitter slip buffer From the slip buffer data is sent to TDM switch then to the framer of channel A The framer A forms G 704 cycle structure Port E1A can function in unframed or framed modes In the first case whole El stream is used for data transmission including timeslots 0 and 16 This results to data rate 2048 Kbit s In the second case user can chose timeslots for data transmission The chosen timeslots form united data channel with data rate Nx64 Kbit s where N 1 30 Timeslot 0 is used for G 704 synchronization In the drop insert mode port V 35 and port ElA are used for data transmission as before but additionally port E1B is used for non data timeslots routing Framed El mode should be set for both El ports Presence of the second E1B port enables connections like shown on the Figure 2 The multiplexer is connected between PBX and central office equipment voice voice data ElB ElA ELF2 MEEV Figure 2 Drop insert mode In the output stream El A non data timeslots will be filled by corresponded timeslots from the input stream E1B Data timeslots will be extracted by multiplexer from the input stream E1A Non data timeslots from the input stream E1A will be routed to the output stream E1B Note that ElA and E1B ports
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