[cisco-voip] SIP calls problem

[James Buchanan]

I'd be interested to see a "show voice call status" from the 2801 while
a call is in progress. That will allow us to confirm 100% that the
gateway is using the proper codec, which I assume is G729r8. Also, if
you could share that 2801 config, that'd be great.

 

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Ratko Dodevski
Sent: Saturday, October 03, 2009 7:21 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] SIP calls problem

 

This is my situation; I have a Cisco VG 2801 whit FXS and BRI ports.
Currently I have analogue phone connected in one of the FXS ports. This
VG needs to connect to softswitch using SIP UA. IN front of the
softswitch there is a SBC (session border controller) which handles the
calls.I managed to create connection and made them to negotiate same
codec and use the SBC as SIP proxy, but I still don't hear anything. In
the attach there is the current configuration and a test call from and
to the phone on the gateway. Also, I see on the softswitch that when I
try to reach a number registered on the softswitch I get SIP message 488
Not Acceptable Here. I should mention that calls to other networks
(PSTN, GSM) are just fine, problem is just with the calls to phones on
the softswitch. Also, this is a production network, and the VG is the
only new component. Also calls to VG from any network (including VoIP
phones)are working. 

Only Difference when debugging is bridge done

        Preferred Codec        : g729r8, bytes :20

        Preferred  DTMF relay  : rtp-nte

        Preferred NTE payload  : 101

        Early Media            : No

        Delayed Media          : No

        Bridge Done            : No

        New Media              : No

        DSP DNLD Reqd          : No

When I receive a call Bridge Done is NO and when I make a call is YES.

What does this means? Is it something relevant?

 

                                             |-----VoIP_Phones

                                             |

Analogue_Phone-----(FXS)CiscoVG(SIP)--------SBC----------SoftSwitch

                                             |

                                             |-----------PSTN

                                             |

                                             |-----------GSM

 

Can anyone provide me with some help or share an expirience?

-- 
Ratko

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