Hi I am having a problem with forwarding a phone to voice mail over leased line.I have 2 2600's each with qsig connection to pbx.when a phone is forwarded over the leased line from one end to the other it only works 50% of the time ie. when it doesn't work it seems the phone just rings out and never goes to voicemail.I have looked at q931 debugs and for a good and bad call both debugs look identical.Also when there is success I notice that more than 1 isdn channel is being brought up.For it to work it seems to need 4 channels which seems crazy.My signaling config is as follows.interface Serial1/0:15
no ip address
no logging event link-status
isdn switch-type primary-qsig
isdn protocol-emulate network
isdn incoming-voice voice
isdn bchan-number-order ascending
fair-queue 64 256 0
no cdp enable
is there any tweeking I can do to rectify this situation or is there an inherant problem with the amount of channels being seen as busy by the pbx for a successful forwarding to voicemail?Another thing is that it works every time when calling the ddi number which is forwarded over leased line to voicemail.Any opinions appreciated thanks!
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