ip office linked with a laser Problem no speech 2

[Wattcom]

I have an ip406 version 2 at one end ip403 at other with a 100mb laser link with a vcm20 module a both ends

The problem i get is sometimes you can call an extension the phone ring but there is no speech path but i can call external via the link test ok .If you call the same extension from another extension on the same switch all ok so i moved the extension that could not hear to a diffrent port the made a call back across the link to the same extension again worked ok

I have replaced the laser just in case i dont think its a vcm module problem cos i can call out external via the link no probs

Any Ideas

 

[TLDuk]

I suspect one of your DSP chips on your VCM modules is playing up have you tried changing the VCMs yet

 

[intrigrant]

With the SysMon and Advanced monitoring enabled you can see if VCMs are ok.

Start SysMon, goto Trace Options -> System and select Development tracing.
Then goto Status and select Voice Compression.
A new window opens were you can monitor the VCM chanels.
No call no data of course.
Both columns Sends and Recvs should have data during a call, if not then there is no UDP data received or the VCM is faulty.
The UDP data can also be checked with SysMon.

 

[TLDuk]

nice info thanks