Wireless IP Phone audio issue

Answered Question
Jun 8th, 2011

Hello,

We have Cisco 9971, 7920 and 7925 wireless phone in our network.  The phones registered with Callmanager. I can call any wired cisco phones in the network.  Everything works fine.  However, when I call from one wireless phone to another wireless phone, the phone would ring but there is no audio when the call was answered.  The wireless phones are in the same vlan. Anyone experienecd the same issue?

Rgds

Mark

I have this problem too.
0 votes
Correct Answer by Nigel Bowden about 2 years 10 months ago

Mark,

In the advanced tab of the WLAN config, have you got peer to peer traffic set to drop?

Once the call is established, the phones go peer to peer, so sounds like it could be getting blocked by that..?

Nigel.

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Correct Answer
Nigel Bowden Mon, 06/13/2011 - 06:02

Mark,

In the advanced tab of the WLAN config, have you got peer to peer traffic set to drop?

Once the call is established, the phones go peer to peer, so sounds like it could be getting blocked by that..?

Nigel.

markcarat Mon, 06/13/2011 - 06:15

Hello Nigel,

P2P was set to Forward Upstream.  Changed the setting to Disable.  it resolved the issue.  5 stars here.

Thank you.

Mark

migilles Mon, 08/01/2011 - 23:25

FYI, PSPF / P2P blocking action is covered in the 7925G Deployment Guide.

http://www.cisco.com/en/US/docs/voice_ip_comm/cuipph/7925g/7_0/english/deployment/guide/7925dply.pdf

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