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7921 One-Way Audio

I'm currently working on creating an open source push-to-talk application for C7921 wireless phones and I'm running into an issue with one-way audio. The application works great from 79xx (wired phones) to other wired phones...and it works great with audio streams originating from the 7921's to the wired phones, but from the wired phones back to the 7921's and from 7921 to 7921 there is no audio. (normal p2p conversations work fine on the 7921's as well)

I've checked the power settings in the wireless and thats all good. I've checked to see that my wireless system allows wireless to wireless connections. I've run a sniffer trace on the link between wireless and wired and see both streams being transmitted, but have no way of sniffing wireless to wireless as of yet.

If anyone has any insight into what might be the issue here it would be appreciated.



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