On 09/29/2011 12:22 PM, Tim Nelson wrote:
Greetings-
From time to time, I find myself working with (or customers working with) "dynamic
T1s". They are typically standard T1s that terminate to an Adtran device which
utilizes the channels for data (64kbps X 24) until a call is pushed inbound/outbound on
the circuit. One data channel is automatically peeled off the circuit (removing 64kbps
from total data throughput capacity), and reallocated as a voice channel.
Is it possible for Asterisk/DAHDI to handle a situation such as this? If I
recall, DAHDI does have some data functions to it, but I'm not sure if it can
handle the circuit as data (presented to kernel for iptables routing/nat),
and/or if it can automagically reallocate channels for voice usage on the fly.
There are methods of peeling off channels dynamically to be used as data
channels (PPP/RAS style), but not the other way around to my knowledge.
Once an HDLC network link has been setup in the kernel's HDLC layer, I
don't believe it can be shrunk or grown.
--
Kevin P. Fleming
Digium, Inc. | Director of Software Technologies
Jabber: [email protected] | SIP: [email protected] | Skype: kpfleming
445 Jan Davis Drive NW - Huntsville, AL 35806 - USA
Check us out at www.digium.com & www.asterisk.org
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