Silent Voicemails left by government agencies

[ucsouth-sarah]

We completed our first 3CX install last month, and by and large, the system works great and the customer is happy with it.

However, this particular customer gets a lot of calls from United States government agencies (Social Security, VA, etc). When the receptionist transfers these calls to a user's voicemail, it always leaves a long silent message. This problem ONLY occurs with various government agencies.

We are using a 16-call path standard version of 3CX connected to a Patton gateway.

I'm still in the 'research' stage of this problem, but I am posting in the hopes that someone has run into this issue before and knows a quick way to fix it. Thanks!

 

[leejor]

I remembered that something similar, involving government callers, came up previously... not certain that there was a resolution

http://www.3cx.com/forums/q-voice-mail-the-first-5-to-10-seconds-got-cut-off-28685.html

 

[tsukraw]

Are you very familiar with doing wireshark captures?
I would be curious to see a wireshark capture from the 3CX system when the issue happens.