[Asterisk-Users] Dynamically limiting the number of outbound calls

[Jim Singh]

In our setup, outbound call volume frequently exceeds
the line capacity of the DSL line. We do not want to
move to another codec to better utilize the line, but
instead wish to automatically divert overflow to the
Long Distance T1 when the DSL is "full". Ideally the
system would also be able to adjust automatically to
network conditions such as network outage, high
latency, jitter and/or packet loss. If the LD T1 was
also full or if there was no other path, Dial would
return busy/congestion instead of connecting a call of
low quality.

I realize that one solution is to manage variables
using macros in the dialplan and keep a count of VOIP
calls. I believe that this a) difficult to maintain b)
can be difficult to dynamically adjust based on
parameters from the jitter buffer, round trip time,
and/or packet loss c) couldn't be "the best way to do
it".

Before I go slinging code, does anyone know of a clean
solution? Do other people need / desire this
functionality?

Our Setup:
	Software: Suse 9.2 + Asterisk 1.0.7 (built from CVS)
	Network: DSL measured to be 2 mbps up / 430 kbps down
	Termination: IAX2 / G711 / nufone and voipjet
	Zaptel: 2 digium 100 cards one connected to a Siemens
PBX and the other to a (long distance)
provider,signaling is E&M Wink


		
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