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New Member

VT Advantage installed, no outside calls working

Hello,

Installed VT Advantage and "Enabled" video for my phone. Now, if the VTA app is loaded, I can't make outside calls. Shutdown the app, I can make all calls.

We use MGCP and ISDN BRI to outside call

Here are traces:

VT advantages OFF

Dec 20 10:16:13.852: ISDN BR0/1/0 Q931: TX -> SETUP pd = 8 callref = 0x27

Bearer Capability i = 0x8090A3

Standard = CCITT

Transfer Capability = Speech

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0x8A

Calling Party Number i = 0x0081, '3307'

Plan:Unknown, Type:Unknown

Called Party Number i = 0x80, '0123456789'

Plan:Unknown, Type:Unknown

Dec 20 10:16:14.184: ISDN BR0/1/0 Q931: RX <- SETUP_ACK pd = 8 callref = 0xA7

Channel ID i = 0x8A

Dec 20 10:16:14.300: ISDN BR0/1/0 Q931: RX <- CALL_PROC pd = 8 callref = 0xA7

Dec 20 10:16:20.480: ISDN BR0/1/0 Q931: RX <- ALERTING pd = 8 callref = 0xA7

Dec 20 10:16:22.632: ISDN BR0/1/0 Q931: TX -> DISCONNECT pd = 8 callref = 0x27

Cause i = 0x8090 - Normal call clearing

Dec 20 10:16:22.848: ISDN BR0/1/0 Q931: RX <- RELEASE pd = 8 callref = 0xA7

Dec 20 10:16:22.852: ISDN BR0/1/0 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x27

VT advantages ON

Dec 20 10:16:24.940: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0/1/0, TEI 0 changed to down

Dec 20 10:16:24.960: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0/1/0, TEI 0 changed to up

Dec 20 10:16:25.264: ISDN BR0/1/0 Q931: TX -> SETUP pd = 8 callref = 0x28

Bearer Capability i = 0x8080A5

Standard = CCITT

Transfer Capability = Speech

Transfer Mode = Circuit

Transfer Rate = Packet - not specified

Channel ID i = 0x8A

Calling Party Number i = 0x0081, '3307'

Plan:Unknown, Type:Unknown

Called Party Number i = 0x80, '0123456789'

Plan:Unknown, Type:Unknown

Dec 20 10:16:25.404: ISDN BR0/1/0 Q931: RX <- RELEASE_COMP pd = 8 callref = 0xA8

Cause i = 0x82C1 - Bearer capability not implemented

Dec 20 10:16:27.404: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0/1/0, TEI 0 changed to down

Dec 20 10:16:27.424: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0/1/0, TEI 0 changed to up

I have applied the bearer-cap Speech

seen on

https://puck.nether.net/pipermail/cisco-voip/2005-July/006221.html

and http://forum.cisco.com/eforum/servlet/NetProf?page=netprof&forum=IP%20Communications%20and%20Video&topic=Video%20over%20IP&CommCmd=MB%3Fcmd%3Dpass_through%26location%3Doutline%40%5E1%40%40.1dd6ddbf/0#selected_message

and

http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186a0080569b65.shtml

but it doens't work :/

Is there workaround ?

Thank you for your help.

Best regards.

  • Other Collaboration Voice and Video Subjects
4 REPLIES
Silver

Re: VT Advantage installed, no outside calls working

For this issue I believe that you may be running into an issue, bug CSCsb90459.

Turn off CVTA before making call or disable Video on IPPhone

When VT Advantage is active, gateway sends ISDN Setup witch bearer capability "0x8080A5"

[Information Transfer Capability: Speech ; Transfer Mode: Packet mode] and the PABX

rejects connections (ISDN cause code "incompatibile destination").

When VT Advantage is off, bearer capabililty is "0x9090A3" and connectivity works fine.

The fix for this is the ES 37 on callmanger 4.1.3. It is not in SR2 as ES 37 was created afterwards.

New Member

Re: VT Advantage installed, no outside calls working

Exactly !

it's confirmed by a case.

Thank you.

New Member

Re: VT Advantage installed, no outside calls working

I guess you could fix this problem on the gateway by forcing bearer-cap speech on the voice port of gw. In the voice port config mode enter "bearer-cap speech".

This workaround was documented long ago in the following article http://www.cisco.com/en/US/tech/tk1077/technologies_tech_note09186a0080093f62.shtml#Solution2

New Member

Re: VT Advantage installed, no outside calls working

Hello,

no, the workaround "bearer-cap speech" doesn't work in our case.

Regards

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