[Asterisk-Users] Broadvoice disconnecting on Asterisk Voice Mail

[Greg Hill]

On Mon, 30 Aug 2004, Chris Shaw wrote:

> ----- Original Message -----
> From: "Kevin" <Asterisk at gtcus.com>
> To: "'Asterisk Users Mailing List - Non-Commercial Discussion'"
> <asterisk-users at lists.digium.com>
> Sent: Monday, August 30, 2004 6:43 AM
> Subject: [Asterisk-Users] Broadvoice disconnecting on Asterisk Voice Mail
>
>
> > When a caller is leaving a voice mail message using my Broadvoice
> > connection, the caller is disconnected in about 30 seconds.
> >
> > Has anyone been able to use Broadvoice without disconnecting on voice
> > mail?
> >
> > Kevin
>
> There have been several threads about this very issue, please consult the
> list before posting a question, people might actually have come up with an
> answer already! If they haven't and there hasn't been activity for a long
> time then post to the EXISTING THREAD with something like "Any progress on
> the BroadVoice Issue?"

Or if you, like me, don't keep your own personal archive of every message
sent to the list (and therefore can't post to the existing thread), then I
guess you can be forgiven. ;-)

A few days ago somebody deterimined that the issue is related to lack of
comfort noise generation (CNG) in Asterisk. When a caller is leaving you
voicemail, Asterisk isn't transmitting any audio. After 30 seconds or so
of this, BV's equipment interprets this as a remote disconnect and hangs
up the line.

If that is indeed the root problem, then the fix would be to either
persuade BV not to disconnect simply because it hasn't seen any audio
going one way, or else (preferrable?) implement some kind of CNG in
Asterisk (or the voicemail and other afflicted systems, at least).

Greg