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OneNumber

These days a concept of OneNumber gains popularity, and it would be nice if it was doable in PBXes realm – currently one has to go to alternative services to achieve that.

Essentially, OneNumber is DID that can be routed with very flexible rules, based on date/time, CLI/CID, combinations of the above, and fallback rules. The idea is to let person to define his/her availability (or non-availability) for different parties using only one phone number.

The major point is that those rules should be maintainable on inbound route level, as an opposite to account level as it currently partially available. The reason is that OneNumber is, in fact, a personal contact, so multiple users of the same account can have their own separate numbers.

How feasible this would be for PBXes?

Apparently the below change have made 89% of this

http://www1.pbxes.com/forum/thread.php?threadid=1035&sid=

However having just two time slots (normal and after- hours) is not enough - I would like to be able to transfer my calls just when I'm in a meeting, and then when I'm at lunch, etc.

Voxalot has implemented Call Connection Rules in a very flexible way, allowing to build various rules based on criteria that is combination of Trunk, CID, day and time; and forwarding target, which consists of extension, SIP URI, or trunk.
Similar implementation in PBXes would be the just perfect.