The 900 if fed from the Provider has indepndent T1's, one for the SIP connection, and
the second for the PRI. They are tied together with DSP chips that convert packetized voice to
TDM voice, i.e. tones. If the primary clock goes down , we will revert to the secondary timing source
or to our Internal oscillator. So the answer is NO, if the SIP side goes down the PRI side would not.
You can configure a Probe, to busy out the PRI if the SIP side goes down. See also article 3383 configuring a Probe.
You should be using firmware A4.05.00 or higher, which is available on our website.
Here is an example as well.
probe FAILOVER icmp-echo
destination zzz.zzz.zzz.zzz zzz would be an IP address like your SIP server
source-address xxx.xxx.xxx.xxx Means ping zzz from xxx , with xxx being usually the wan address of the adtran
tolerance consecutive fail 5 pass 2 If 5 failures initiate probe track , if 2 pass disable track
test if probe FAILOVER
voice trunk T02 type isdn
description "PRI CONNECTION"
resource-selection circular descending
busy-out monitor track WANTRACK says busy-out this PRI if probe track initiated
caller-id-override number-inbound 2565551212
connect isdn-group 1
rtp delay-mode adaptive
Thanks lukevich. Going to test now.
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