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  1. Aastra 6755i not working in 3CX (no sound)

    No, the PBX server is in a data center. but the phones were working fine and without changing any setting the sound from the calls is not working. u can heard the ringing but as soon you pick the phone the sound is gone. The *777 zelf call dont get sound neither. yes, the phones have the...

  2. Aastra 6755i not working in 3CX (no sound)

    Product: 3CX Phone System Professional Edition Version Number: 15.0.0 the service pack is the latest one we can not find the exact version in the new 3cx v15 The phones Firmware is also latest version 3.3.1.4358 We used the default templates indeed, but we had to change some settings afterwards...

  3. Aastra 6755i not working in 3CX (no sound)

    *777 don't get sound also.

  4. Aastra 6755i not working in 3CX (no sound)

    Hi guys, In our company we have around 6 of this phones and ramdomly they stop all working with the same issue. The issue is that u can call outsite and you get calls also but when you pick up the phone you can not heard anything and the caller also. i tried to reconfigurate the phones but did...
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