[VoiceOps] Call established before audio path

[Nick Olsen]

+1 I saw this on incoming calls to an IVR off the PSTN. If I immediately 
started playing media, The caller wouldn't get the first little bit. Our 
fix for this was inserting a 1 second wait after answering the channel. 
Prior to playing the IVR message.
  
 Never seen this on an outbound call. Or inbound to a human. Generally, The 
human element inserts this same 1 second wait as they lift the receiver. 
Put it to their ear..Say hello...etc.
  
 Nick Olsen
Network Operations  (855) FLSPEED  x106
 

  

----------------------------------------
 From: "Eric Wieling" <EWieling at nyigc.com>
Sent: Friday, June 13, 2014 1:08 PM
To: "Brian Taylor" <briant at socket.net>, "voiceops at voiceops.org" 
<voiceops at voiceops.org>
Subject: Re: [VoiceOps] Call established before audio path   
In my experience allow reinvites / directmedia, etc will cause a short 
delay in setting up audio.

-----Original Message-----
From: VoiceOps [mailto:voiceops-bounces at voiceops.org] On Behalf Of Brian 
Taylor
Sent: Friday, June 13, 2014 12:07 PM
To: voiceops at voiceops.org
Subject: [VoiceOps] Call established before audio path

We have customers who are reporting that when people call into them that 
the beginning of the greeting is not being heard.
It appears that the phones think the call is ready before there is a 
complete audio path. We see this the most on calls that come in from the 
PSTN. Long distance or toll free calls are the worst.
We have a Broadworks system that uses Lucent 5010 (Telica) switches for the 
connections to the PSTN.
The symptom seems to be very similar for all of our PSTN connections, to 
multiple carriers.

I'm just curious if anyone has any experience with this problem, or if 
anyone has any suggestions to get to the bottom of the issue.

Any assistance or inspiration would be greatly appreciated.

Thank you,
Brian Taylor
Socket Telecom, LLC
brian at socket.net
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