[cisco-voip] PBX-to-IPPBX calls

[Jason Burns]

It sounds like your PRI Switch Type is set incorrectly based on the type of
q931 errors you're getting. Is it NI2, 5ESS, DMS100?

On Thu, Jun 4, 2009 at 6:30 PM, Ratko Dodevski <rade239 at gmail.com> wrote:

> Hi, i have question (obviously :) )
> I have big troubles connecting a TDM PBX to a IPPBX through SBC via SIP.
> When I do *debug isdn q931 *I keep getting this massages:
> Cause i = 0x80E018 - Mandatory information element missing
> Cause i = 0x80E27D - Message not compatible with call state or not
> implemented
> Cause i = 0x82E5 - Message not compatible with call state
>
> Called number is ringing but when i pick-up it gives me busy dial and if i
> hung-up it rings again. On the SBC I can see that after picking router sends
> BYE signal with "Bearer capability not implemented" and instantly sending 2
> more invites for call.
> I tried with setting bearer-cap Speech and i use the command isdn
> incoming-voice voice.
>
> Tried many combinations... Any ideas ????
>
> Thanks
> --
> Ratko
>
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