I'm using a Cisco 1760 gateway with a VIC2-2BRI interface to implement a FOIP solution.
I'm using an H323 IP stack.
This is working fine. But under stress circumstances, sending a fax on all available channels, sometimes I have an error between calls : "All Channels busy". I must say that there is only 18ms between calls. May be this is too fast for the gateway.
Please find the running configuration and the Q931 debug log in the attachment.
I went through the debug and sh run but noticed that in the debug only Dial-peer=101 is matched as outgoing. I was not able to find dial-peer 101 in the configs. So either this is the wrong debug or config.
In any case when you say 18ms im assuming its right after "release complete". Call teardown would take some time. In case you want to really confirm whether there is a problem or not, it's better to troubleshoot on both IP and TDM. Get the following debusg together.
1. deb isdn q931
2. deb h225 asn1
3. deb h245 asn1
4. deb voice ccapi inout
Make sure you send the debug with a new call and then try to simulate the next call(s) which gives "All channels busy". We will be able to get a better insight.
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