[cisco-nas] AS5350 E1 back to back

[Adam Greene]

Connecting (2) routers back to back via T1 controller serial ports requires a T1 crossover cable. Not sure if the same applies in your case. Here's what I have re: pinouts (I hope this list supports HTML):

T1 Crossover
This can be used to connect two CSU/DSU's as long as one is set to provide clocking.

      Pin
     Signal
     Pin
     
      1
     Receive Ring
     4
     
      2
     Receive Tip
     5
     
      3
     N/C
     N/C
     
      4
     Transmit Ring
     1
     
      5
     Transmit Tip
     2
     
      6
     N/C
     N/C
     
      7
     N/C
     N/C
     
      8
     N/C
     N/C
     


In case it's helpful, here's an additional link regarding the T1 crossover pinout.

http://www.cisco.com/en/US/customer/products/hw/switches/ps298/products_installation_guide_chapter09186a008007c8e6.html

Good luck,
--A

----- Original Message ----- 
From: "Nicolas Maton" <NMaton at be.tiscali.com>
To: "Rivo Tahina RAZAFINDRATSIFA" <r.tahina at wanadoo.mg>; <cisco-nas at puck.nether.net>
Sent: Friday, July 09, 2004 7:48 AM
Subject: RE: [cisco-nas] AS5350 E1 back to back


> Hi Rivo,
> 
> 
> Try to configure your serial as this:
> 
> interface Serialx/x/x:15
>  no ip address
>  encapsulation ppp
>  autodetect encapsulation ppp v120 lapb-ta
>  no snmp trap link-status
>  isdn switch-type XXXXX
>  isdn protocol-emulate network <<< this is the line you need for emulation for back to back 
>  isdn incoming-voice modem
>  isdn negotiate-bchan resend-setup
>  no isdn outgoing display-ie
>  no cdp enable
> !         
> 
> 
> Greetings
> 
> <<< Cogito ergo sum >>> 
> I think¸ therefore I exist 
> Nicolas Maton 
> Network Engineer / Security Engineer/Ss7 Engineer
> s.a. Tiscali Belgium n.v. 
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> E-mail: nmaton at be.tiscali.com 
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> 
> 
> 
> -----Original Message-----
> From: Rivo Tahina RAZAFINDRATSIFA [mailto:r.tahina at wanadoo.mg]
> Sent: vrijdag 9 juli 2004 9:31
> To: cisco-nas at puck.nether.net
> Subject: [cisco-nas] AS5350 E1 back to back
> 
> 
> Hi all,
> 
> I tried to connect 2 AS5350 back to back via E1 port (hdlc)
> 
> When I do a sh serial 3/0:0, it shows
> Serial3/0:0 is down, line protocol is down
> is it a clock issue?
> 
> clock configuration is available with AS5300 E1 controller, but not for the 
> AS5350.
> 
> Any idea?
> 
> Kind regards.
> 
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