On your pots dial-peer set the codec to g711alaw, or configure your
SIP clients to use that codec.
Dan
-----Original Message-----
From: Yang Xiang [mailto:yang.xiang@iitb.fraunhofer.de]
Sent: Friday, April 25, 2003 7:55 AM
To: serusers(a)lists.iptel.org
Subject: [Serusers] problem with cisco 2600 to pstn
Hi all,
I am expericing problem with the cisco 2600, which should function as
the sip2pstn gateway. If I try to complete a call from a sip phone to
pstn, the router says:
------------------------------------------------------------------------
00:15:49: ISDN BR1/0: TX -> SETUP pd = 8 callref = 0x03
00:15:49: Bearer Capability i = 0x8090A2
^^^^^^
00:15:49: Channel ID i = 0x83
00:15:49: Progress Ind i = 0x8181 - Call not end-to-end ISDN,
may
have in-band info
00:15:49: Calling Party Number i = 0x80, 'yang2', Plan:Unknown,
Type:Unknown
00:15:49: Called Party Number i = 0xC9, '6091574', Plan:Private,
Type:Subscriber(local)
00:15:49: ISDN BR1/0: RX <- SETUP_ACK pd = 8 callref = 0x83
00:15:49: Channel ID i = 0x89
00:15:49: Progress Ind i = 0x8188 - In-band info or appropriate
now
available
00:15:49: ISDN BR1/0: RX <- DISCONNECT pd = 8 callref = 0x83
00:15:49: Cause i = 0x80C1 - Bearer capability not implemented
^^^^^^^^^^^^^^^^^^^^^^^^^^
00:15:49: Progress Ind i = 0x8188 - In-band info or appropriate
now
available
------------------------------------------------------------------------
----
------------
Please notice the line "Bearer Capability i = 0x8090A2", the digits
"80" mean that this is a ITU voice call, "90" mean circuit mode, 64
kbps
and "A2" is for G.711 u-law.
So if I call the router from a normal telephone, the debugging looks as
follows:
------------------------------------------------------------------------
----
----
01:01:58: ISDN BR1/0: RX <- SETUP pd = 8 callref = 0x01
01:01:58: Bearer Capability i = 0x8090A3
^^^
01:01:58: Channel ID i = 0x89
01:01:58: Calling Party Number i = 0x0181, '609157', Plan:ISDN,
Type:Unknown
01:01:58: Called Party Number i = 0xC1, '20', Plan:ISDN,
Type:Subscriber(local)
01:01:58: High Layer Compat i = 0x9181
01:01:58: ISDN BR1/0: Event: Received a VOICE call from 609157 on B1 at
64 Kb/s
------------------------------------------------------------------------
----
---------
whereat the bearer capability is "0x8090A3". It means that the
ISDN-switch of German Telekom uses G.711 a-law.
I am afraid that is the reason why the sip-call doesn't go through. But
I can't find any way to configure this.
Has anybody in this mailinglist the same experience?
Any hints would be very appreciated.
Thanks
yang
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