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New Member

Connecting 2650XM - 2620 Router back to Back WIC - T1

Hi all,

I have 2650XM  router and 2620 Router

Both routers have built in WIC  T1 CSU/DSU cards

2620Router --

2620Router#sh int se0/0

Serial0/0 is down, line protocol is down

  Hardware is PQUICC with Fractional T1 CSU/DSU

  Description: DTE  side

  MTU 1500 bytes, BW 1544 Kbit, DLY 20000 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation HDLC, loopback not set

  Keepalive set (10 sec)

  Last input never, output never, output hang never

  Last clearing of "show interface" counters 00:30:16

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     0 packets input, 0 bytes, 0 no buffer

     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

     0 packets output, 0 bytes, 0 underruns

     0 output errors, 0 collisions, 60 interface resets

     0 output buffer failures, 0 output buffers swapped out

     0 carrier transitions

     DCD=down  DSR=up  DTR=up  RTS=up  CTS=down

Config on 2620 Router  serial interface is

interface Serial0/0

description DTE  side

service-module t1 clock source line

ip address 10.10.10.2

255.255.255.252

                

service-module t1 framing esf

service-module t1 linecode b8zs

encapsulation ppp

fair-que

Hardware info of WIC  card

  WIC Slot 1:
        FT1 BT8360
        Hardware revision 1.3           Board revision E0
        Serial number     29322983      Part number    800-03279-04
        FRU Part Number   WIC-1DSU-T1= **************************************************************************

        Test history      0x0           RMA number     00-00-00
        Connector type    Wan Module
        EEPROM format version 2
        EEPROM contents (hex):
          0x20: 02 11 01 03 01 BF 6E E7 50 0C CF 04 00 00 00 00
          0x30: 70 00 00 00 02 10 07 01 FF FF FF FF FF FF FF FF

**************************************************************************************************************************************

2650XM Router

Hardware info of WIC  card

WIC Slot 0:
        FT1 BT8360
        Hardware revision 1.3           Board revision E0
        Serial number     29315221      Part number    800-03279-04
        FRU Part Number   WIC-1DSU-T1=

        Test history      0x0           RMA number     00-00-00
        Connector type    Wan Module
        EEPROM format version 2
        EEPROM contents (hex):
          0x20: 02 11 01 03 01 BF 50 95 50 0C CF 04 00 00 00 00
          0x30: 70 00 00 00 02 10 04 01 FF FF FF FF FF FF FF FF

Serial int se0/0

2650XM#sh int se0/0

Serial0/0 is down, line protocol is down

  Hardware is PQUICC with Fractional T1 CSU/DSU

  Internet address is 192.168.35.3/24

  MTU 1500 bytes, BW 1536 Kbit, DLY 20000 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation HDLC, loopback not set

  Keepalive set (10 sec)

  Last input never, output never, output hang never

  Last clearing of "show interface" counters never

  Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0

  Queueing strategy: fifo

  Output queue: 0/40 (size/max)

  5 minute input rate 0 bits/sec, 0 packets/sec

  5 minute output rate 0 bits/sec, 0 packets/sec

     0 packets input, 0 bytes, 0 no buffer

     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

     0 packets output, 0 bytes, 0 underruns

     0 output errors, 0 collisions, 2 interface resets

     0 output buffer failures, 0 output buffers swapped out

     0 carrier transitions

     DCD=down  DSR=up  DTR=up  RTS=up  CTS=down

Serial int config

interface Serial0/0

ip address 10.10.10.1 255.255.255.252

service-module t1 clock source internal
service-module t1 timeslots 1-24 speed 64                
service-module t1 framing esf
service-module t1 linecode b8zs

encapsulation ppp
fair-que

My question is that cisco website says there are two type of cable connections for this type of config --

which are  --

T1 CSU/DSU Configuration

Set one CSU/DSU to clock source internal, and the other CSU/DSU to clock source line. The linecode, framing, data-coding, and timeslots must be set the same on both CSU/DSUs.

Four-Wire 56k CSU/DSU Configuration

For my network connection which type of config i should use??

Secondly i try to connect these ports by normal crossover cable  it did not work.

So for this type of connection i know i need T1 cross over cable--  which has RJ 48 connections at both sides.

I check cable from ebay which is

RJ45 RJ48 cross over  --  will this cable work in my router to router connection.

Thanks

MAhesh

1 ACCEPTED SOLUTION

Accepted Solutions
VIP Super Bronze

Re: Connecting 2650XM - 2620 Router back to Back WIC - T1

Mahesh,

Yes, this would work too.  If you are close to an electronic store, you can usually pick them up at the store, but ebay is cheaper.  Get 2 or 3 6 FT cables.

What part of Canada you live in?

Thanks,

Reza

5 REPLIES
VIP Super Bronze

Connecting 2650XM - 2620 Router back to Back T1

Hi Mahesh,

All you need is a T1 Cross over cable. Your modules are T1 with build in CSU/DSU.  Don't worry about the 56k CSU/DSU configuration.

You can make your own or buy one.

Here is one: 

http://www.ebay.com/itm/T1-Crossover-Cable-Cisco-WIC1-DSU-T1-Back-to-Back-5-FT-/140600458118

HTH

New Member

Connecting 2650XM - 2620 Router back to Back WIC - T1

Hi Reza,

Thanks for quick reply.

That cable from ebay is not for shipment to canada  only USA.

Please if you can check this link

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=230416770484&ssPageName=ADME:X:RTQ:US:1123

and let me know is this is also right cable?

Thanks

MAhesh

VIP Super Bronze

Re: Connecting 2650XM - 2620 Router back to Back WIC - T1

Mahesh,

Yes, this would work too.  If you are close to an electronic store, you can usually pick them up at the store, but ebay is cheaper.  Get 2 or 3 6 FT cables.

What part of Canada you live in?

Thanks,

Reza

New Member

Connecting 2650XM - 2620 Router back to Back WIC - T1

Hi Reza,

Thanks for reply.

I will buy from Ebay --  as i could not find here in store.

I live in calagry- 

MAhesh

New Member

Connecting 2650XM - 2620 Router back to Back WIC - T1

Hi Reza,

Many thanks again for yours great help.

Regards

Mahesh

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