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Question:Channel Sync with PBX and Reset Channel on Gateway


There are several gateways(c2851 with 12.3(11)T8, ISDN E1 PRI Card) in our voip network.

the first,

I tried to make busy some specific channel to block user's call setup.

I usually use "isdn b-channel x" under int serial 1/0:15.

But, this time, PBX(NEAX) technician told me, he can't see the busy channel, made by gateway, in his PBX system.

So I think, Both of them can't sync E1 channel.

Thus, eventhough the gateway made busy some specific channel, PBX can't recognized the busy status of the channel made by gateway.

Let me know, how can I check to resolove the problem?

the second,

Sometime, Between Gateway and PBX have problem, but i don't know why.

To resolove the problem, I tried to reset channel using "isdn busy b_channel x" under int se 1/0:15.

after that reuse usingn "no isdn busy b_channel x" under int se 1/0:15."

But , i think, this way, using busy channel, is not reset status, just only making busy and then making idle.

When i shutdown and then no shutdown under voice-port, the all channel become initial status.

But all calls disconnect.

Please let me know, how can i make initial status some specific channel, not using shut, no shut under voice-port, but gain same effect..



  • Voice over IP

Re: Question:Channel Sync with PBX and Reset Channel on Gateway

For the first question, instead on 'isdn busy', you can make use of 'isdn service' command. It takes an individual B channel or an entire PRI interface out of service or sets it to a different channel service state that is passed in to the switch.

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