Gurus:

I have encountered a strange on-way audio problem.  If anyone else has seen
this I would appreciate knowing the details.


Layout:


                                           +==>[SP-601-A]
                                           |
    SIP/FEED====>[PBX1]<===IAX===>[PBX2]<==+==>[SPA841-C]
                                           |
                                           +==>[SP-601-B]


1. The Polycom SP-601 phones (A&B) can call each other and the Sipura SPA841
phone (C) just fine.  

2. Anyone from the outside or directly connected to PBX1 can call SPA841-C
just fine.  

3. Calls from the outside or directly connected to PBX1 have one-way audio
from the SP-601 back working fine, but no audio to the phone.  

4. All codecs are locked to 711Mu.  

5. Frame counters show traffic going in both directions at all pbx test
points.

6. Duplicate results with IAX trunk/non-trunk.

Does this ring any bells with anyone???

Thanks,

Tim McKee

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