If a T1 from the network goes down on a 924e, does the D/Channel go down on the PRI

[Anonymous]

Looking to see if a network provided T1 into a 924e goes down, does the D/Channel go down on a PRI going to a PBX?

[Anonymous · Accepted solution]

Raul,

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.

http://kb.adtran.com/display/2/index.aspx?c=&cpc=&cid=&cat=&catURL=&r=0.707755148410797

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

period 5

tolerance consecutive fail 5 pass 2                                                                If 5 failures initiate probe track , if 2 pass disable track

no shutdown

!

track WANTRACK

test if probe FAILOVER

no shutdown

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

modem-passthrough

rtp delay-mode adaptive

codec-group 729-711

[Anonymous]

Thanks lukevich. Going to test now.

[Anonymous]

Raul,

I went ahead and flagged this post as "Assumed Answered".  If the response on this thread assisted you, please mark it as Correct or Helpful as the case may be with the applicable buttons.  This will make it visible and help other members of the community find solutions more easily.  If you still need assistance, we would be more than happy to continue working with you on this - just let us know in a reply.

Thanks!

David