[cisco-voip] ISR 4431 - Need to configure "clock source internal" on PRI interface , get error

[NateCCIE]

Ryan,

This doc and sample config seems to only show how to do normal user side & network clocking.

When doing network side isdn to a pbx, you have to provide them the clock, I like Brian have not figured out that part of the 4K voodoo. 

Sent from my iPhone

> On Oct 27, 2015, at 7:23 PM, Ryan Huff <ryanhuff at outlook.com> wrote:
> 
> Brian,
> 
> You'll essentially be doing the same thing as you would have in the ISRG2 but as you've discovered, the syntax has changed a bit in the 4k's. I've included the relevant portion of a t1 config on a 4k in my lab below. Here is the link for 4th gen NIM t1 configurations (I'd suggest a good read here, a lot of syntax has changed that might leave you scratching your head): http://www.cisco.com/c/en/us/td/docs/routers/access/interfaces/NIM/software/configuration/guide/ConfT1E1NIM.html
> 
> 
> 
> Hope This Helps,
> 
> 
> Ryan
> 
> 
> |----- CONFIG SAMPLE -----|
> 
> card type t1 0 2
> !
> isdn switch-type primary-ni
> !
> network-clock synchronization automatic
> network-clock synchronization participate 0/2
> !
> voice-card 0/2
> dsp services dspfarm
> !
> controller T1 0/2/0
> framing esf
> linecode b8zs
> !
> 
> clock source line primary
> 
> network-clock input-source 1 controller t1 0/2/0
> cablelength long 0db
> pri-group timeslots 1-24 voice-dsp
> !
> interface Serial0/2/0:23
> encapsulation hdlc
> isdn switch-type primary-ni
> no cdp enable
> 
> !
> 
> 
> |----- CONFIG SAMPLE -----|
> 
> From: cisco-voip <cisco-voip-bounces at puck.nether.net> on behalf of Brian V <bvanbens at gmail.com>
> Sent: Tuesday, October 27, 2015 8:42 PM
> To: cisco-voip at puck.nether.net
> Subject: [cisco-voip] ISR 4431 - Need to configure "clock source internal" on PRI interface , get error
>  
> I have a ISR 4331 that I'm configuring for voice PRI support.
> Performing an integration with a Nortel PBX (back to back PRI) where i need to be the clock source on the underlying T1 circuit.
>  
> In the past on ISR G2 platforms (like a 2921),  I could configure "clock source internal" under the controller T1 interface.  On the 4331 I get the following error when the clock source it set to internal under the controller T1
>  
> TIV-4331-01-TEMP(config-controller)#pri-group timeslots 1-24            
> %Cannot create ds0/tdm/pri-group with clock source internal
> %pri-group voice-dsp cannot be created under the clock source configuration
>  
> How do I accomplish the same on this newer platform or is it no longer possible ?
> 
> The NIM does have it's own DSP resources.
> I can get the integration up and working, with the default "clock source line",  but I  get slips on the t1 as the Nortel side is free running  and looking to the line as a clock source on its end.
> 
> I hope I'm just missing something obvious.
> Thanks
> 
> 
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