[cisco-voip] CUBE to VXML the prompt starts playing before call is setup

[Joe Pollere (AM)]

This customer Jason is referring to has their audio files setup with no lead-in silence (0ms). I’ve seen vague references that 100-500ms is a good best practice. Does anyone have any definitive references or experience as to what the Best Practice for lead in silence should be?

BTW packet capture (and rtp playout with wireshark) on the CUBE proved the audio was being sent to the carrier but is being truncated in the Carrier Network.

Thanks,

Joe

From: cisco-voip [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Jason Aarons (AM)
Sent: Thursday, November 06, 2014 2:37 PM
To: cisco-voip (cisco-voip at puck.nether.net)
Subject: [cisco-voip] CUBE to VXML the prompt starts playing before call is setup


Customer is running UCCE with a VXML gateway that has a CUBE in front of it.

The VXML prompts start to play before the CUBE sets up the audio, so once the audio comes in the end user has missed the first 1-2 words.  Normally I tell the customer to start record the prompts with a 2 second delay before speaking.

Any ideas why the CUBE/VXML audio isn’t cutting thru fast enough? Debug ccsip messages on cube/vxml.  They are using Early Offer as well.


itevomcid
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