[VoiceOps] Letting a phone ring forever?

Scott Berkman scott at sberkman.net
Tue Jul 26 16:13:50 EDT 2011

Also, some SIP stacks do not handle multiple 18X responses well (or
choose/are configured not to at all).

-----Original Message-----
From: voiceops-bounces at voiceops.org [mailto:voiceops-bounces at voiceops.org]
On Behalf Of Alex Balashov
Sent: Tuesday, July 26, 2011 4:00 PM
To: voiceops at voiceops.org
Subject: Re: [VoiceOps] Letting a phone ring forever?

On 07/26/2011 03:13 PM, Mark R Lindsey wrote:
> And I suspect you could accomplish the same within most VoIP platforms 
> by either (a) adjusting timers, or (b) sending periodic SIP 
> provisional responses, such as the SIP 182 response

We've found that periodically resending 1xx provisional responses doesn't
influence how long most UACs are willing to entertain a dialog in early /
progress state.

Alex Balashov - Principal
Evariste Systems LLC
260 Peachtree Street NW
Suite 2200
Atlanta, GA 30303
Tel: +1-678-954-0670
Fax: +1-404-961-1892
Web: http://www.evaristesys.com/
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