[cisco-voip] 2 stage inbound to FXO port issues

[ccieid1ot]

For calls inbound to FXO ports, you would need to configure connection plar.

On Mon, Feb 25, 2013 at 10:38 AM, Jeffrey Girard <
jeffrey.girard at girardinc.com> wrote:

>  Simplified diagram is attached.  Lab network.
>
>  Scenario:  Using a 2811 router as a PSTN emulator.  Has a 2 port FXS
> card installed.  One port has an analog phone attached, other port is
> connected to a 4 port FXO card installed into a 2951 router.  2951 is H323
> with CUCM 8.6.  Simple/test dial peers configured.  Snippets below:
>
>  PSTN Emulator:
>
> !
>
> voice-port 0/0/0
>
> !
>
> voice-port 0/0/1
>
> !
>
> !
>
> !
>
> !
>
> dial-peer voice 1 pots
>
> description Emulating legacy PATCOM number
>
> destination-pattern 0999
>
> port 0/0/1
>
> !
>
> dial-peer voice 2 pots
>
> description Emulating tie line to Access Terminal
>
> destination-pattern 9999
>
> port 0/0/0
>
>  H323 Gateway Router
>
> !
>
> voice-port 0/1/0
>
> trunk-group FXO
>
> cptone PK
>
> !
>
> voice-port 0/1/1
>
> trunk-group FXO
>
> cptone PK
>
> !
>
> voice-port 0/1/2
>
> trunk-group FXO
>
> cptone PK
>
> !
>
> voice-port 0/1/3
>
> trunk-group FXO
>
> cptone PK
>
> !
>
> !
>
> dial-peer voice 1 pots
>
> description Incoming Call Routing
>
> incoming called-number .
>
> direct-inward-dial
>
> !
>
> dial-peer voice 2 voip
>
> description Incoming Call Routing
>
> incoming called-number .
>
> voice-class codec 1
>
> dtmf-relay h245-alphanumeric
>
> no vad
>
> !
>
> !
> voice-port 0/1/0
> trunk-group FXO
> cptone PK
> !
> voice-port 0/1/1
> trunk-group FXO
> cptone PK
> !
> voice-port 0/1/2
> trunk-group FXO
> cptone PK
> !
> voice-port 0/1/3
> trunk-group FXO
> cptone PK
> !
>
> !
>
> dial-peer voice 999 pots
>
> description Dummy dial peer to test BYOPBX
>
> destination-pattern 0999
>
> port 0/1/0
>
> forward-digits all
>
> !
>
>  I have other dial-peers on this router (not shown) that will take the
> inbound digits.  However, Im never able to pass the digits.
>
>  Calls from the VoIP network to the simulated PSTN work fine.  Calls from
> the PSTN to the VoIP network fail.
>
>  When I pick up the analog phone, I get the expected dial tone.  I enter
> "9999" and the call rings to the FXS port and I hear the FXO port answer.
> I get the expected secondary (2 stage) dial tone, but then before I can
> press any digits, the FXo port hangs up and I am left with the PSTN router
> dial tone.
>
>  debug voip dialpeer on the H323 router shows no results at all when I
> try to place the call.
>
> debug voip dialpeer on the PSTN router shows the expected dial peer
> matching and the expected result.  File is attached.
>
>  Additionally, when I observe the output of show voice port summary while
> I place the call, I see the FXS port (the one that is tied to the FXO port)
> go off hook and then go back on hook (file also attached)
>
>  So, the FXO port appears to be looking for something from the FXS when
> it answers the call, doesnt get it (or doesnt like what it gets) so it
> hangs up.
>
>  Looking for help...
>
>  Jeff
>
> _______________________________________________
> cisco-voip mailing list
> cisco-voip at puck.nether.net
> https://puck.nether.net/mailman/listinfo/cisco-voip
>
>


-- 
duy
CCIE #27737 Voice
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/cisco-voip/attachments/20130226/3d92829e/attachment.html>