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6757i - calls cutting off after 30 minutes, for some reason

fentible
Posts: 1
 Member Since:
2010-01-25
Submitted by fentible on Mon, 01/25/2010 - 7:24am.

I'm maintaining a system with five Aastra 6757i phones, one Snom 320, and two softphones connected. On the Aastra 'phones ONLY, calls cut off abruptly after thirty minutes... Can anyone suggest what the problem might be?

I'm afraid I'm utterly baffled.

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