SIP fail to ZAP

tomcom2k
Posts: 1
Member Since:
2009-01-11

Setting up my first trixbox CE for a sales office.

I wish to use voip to reduce phone call costs, but still need 6 traditional ISDN backup channels.

I never want to use the ISDN unless there is no Internet.

Is it possible to configure like that?

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As a side question, can it be configured that certain extensions use ISDN all the time for better call quality whilst others default to voip?
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Thank you in advance, Tom