Configuration help with France Telecom T2 connection

Unanswered Question
Apr 9th, 2010

Hello

I have a "T2" connection from France Telecom.  An ISDN30 (E1) was requested.  Handoff is RJ45.  A standard E1 config is not working.  Does anyone have experience with T2 connections?  As best I can tell, a T2 is essentially the same as an E1.  Router is a 3845, connection can be H323 or MGCP back to a Call Manager.  I could use help on the controller and serial configuration.

Right now I have:

controller E1 0/1/0
pri-group timeslots 1-31

interface Serial0/1/0:15
no ip address
encapsulation hdlc
isdn switch-type primary-net5
isdn incoming-voice voice
no cdp enable

Thanks very much for any assistance.

I have this problem too.
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Aaron Harrison Fri, 04/09/2010 - 00:44

Hi

Well, not sure what T2 is (the liquid Terminator wasn't it?)..

But most places in Europe outside the UK use 'framing no-crc' under your E1 controller config.

Try that...

Aaron

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abraham1982 Mon, 03/21/2011 - 13:16

Hi

We have the same problem.... Can you tell me how you go this thing to work. I have the exact same E1 Config on my router.

Regards

Abraham

DougVogel Mon, 03/21/2011 - 13:20

Hi Abraham

I believe the root cause of my issue was physical.  The connection from the Fance Telecom box to the router required a cross over instead of a standard T1 cable or a straight through.  If you are still having issues - let me know and perhaps paste in your config.


-Doug

abraham1982 Mon, 03/21/2011 - 13:44

Thank you so much for the reply Doug.

I have copied the relevant parts of the Running Config and is given below.

Could you please review this.

network-clock-participate wic 0

isdn switch-type primary-net5

voice-card 0
dspfarm
dsp services dspfarm

voice service voip
allow-connections h323 to sip
allow-connections sip to sip
fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback none

voice class codec 1
codec preference 1 g729br8
codec preference 3 g711alaw
codec preference 4 g711ulaw

controller E1 0/0/0
pri-group timeslots 1-31

controller E1 0/0/1

interface Serial0/0/0:15
no ip address
encapsulation hdlc
isdn switch-type primary-net5
isdn incoming-voice voice
no cdp enable

Thanks in advance

Abraham

DougVogel Mon, 03/21/2011 - 14:07

Hi Abraham

Here are the relevant pieces of my configuration, this is on a 2811.  I am using H323 back to a CM 7.  You will see mine is a fractional E1 so the timeslots are different.


card type e1 0 2

network-clock-participate wic 2
network-clock-select 1 E1 0/2/0

!
isdn switch-type primary-net5
!
voice-card 0
dspfarm
dsp services dspfarm
!
!
controller E1 0/2/0
framing NO-CRC4
pri-group timeslots 1-16
!

interface Serial0/2/0:15
no ip address
encapsulation hdlc
isdn switch-type primary-net5
isdn incoming-voice voice
no cdp enable
!
!
voice-port 0/2/0:15
cptone FR

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