IP Communicator Problem, Microphone automatically switches off

[geand]

Hello,

I´m having a CCM3.3.4 with several Hardphones and IP Communicator running.

The problem is only with the IP-Communicators.

During outbound Calls after a few minutes the caller on the IP-Comm couldn´t be heard on the PSTN-Site for several seconds and comes back automatically after a few seconds.(approx. 10 - 20 sec). During this few seconds the caller at the PSTN-Site can be heard properly.

This problem happens randomly accross all IP-Communicators.

The IP-Comms have different headsets and different PC-Hardware.

This is like a sporadic one-way-voice issue.

All the most likely causes like Gateway-Problem, Switches, QoS, PSTN I´ve already checked.

I´d appreciate any hint.

Thanx in advance

[gogasca]

According to your description you could be hitting

CSCed76879.

IP Communicator version 1.1(3) includes the fix for this issue.

http://www.cisco.com/cgi-bin/tablebuild.pl/ip-comm

[geand]

Unfortunately this is not my problem, because an Upgrade to Version 1.1(3) did not fix this problem.

But anyway thanx for this hint.