We are using NM-4B-S/T= as a ISDN BRI card to terminate ISDN BRI lines from service provided to make incoming and outgoing calls on H323 gateway. I am facing a problem of with error as below.
025786: *Apr 23 08:12:12.716: ISDN BR2/2 **ERROR**: accept_incoming_csm_call: modem problem Bearer capability not available(0x3A): b channel 0, call id 0x8B.
I have also added isdn incoming-voice modem command as per the isdn disconnect cause codes. But still the problem persist. We have tested BRI line with BRI Analyzer and calls are landing on it successfully.
Is this NM-4B-S/T= supported to make and receive voice calls.
I have successfully tested calls made from analog lines on the same gateway, Problem is only with the BRI lines.
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