Recently I have stumbled upon a peculiar problem. When the call happens between two phones according to the topology below sometimes a one way audio problem occurs (one call out of nearly 20-30). Here is the figure:
What is interesting, problem happens on Cisco 8865 and only when both phones for some reason switch to 711a-law. Usually they operate on 711u-law as both trunks are configured with MTP-termination on VoiceGW with primary codec as 711u-law. Moreover, transcoding is already configured on the router so there should be no problem with working on 711a-law.
So, here are several questions I am curious about:
-Why do phones might switch to 711a even though 711u is configured on trunk?
-Why does one way audio might happen with active transcoder on MTP?
-Where do I start to troubleshoot apart from capturing RTP traffic on phones (it would be problematic as problem occurs rarely)?
Is there a way in UCCE with using an admin script maybe using the email application in Call Studio to send out an email? I know in UCCX you can send out an email if the script were to fail but is there a way to do it in UCCE? Any help would be great!
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