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System Functions and Features as of I7.9
Call routing
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Partial Rerouting
Partial rerouting (PARE) is a supplementary service for PBX operators and is availa-
ble only on a point-to-point connection (basic and primary rate access).
Call Forwarding Procedure
Call Forwarding Unconditional is transferred to the exchange as follows (
):
•
User B activates a Call Forwarding Unconditional to user C.
•
User A calls user B.
•
The PBX carries out the Call Forwarding Unconditional locally in the PBX. Two B
channels are busy. 2 channels B are busy
•
The PBX activates PARE or CD at the public network provider.
•
The network provider takes charge of the Call Forwarding Unconditional; the 2 B
channels are freed.
•
User C is called. He is presented with user A’s phone number and the redirecting
information by way of CLIP. At the same time the redirecting information is also
transmitted back to user A (see
"Display for Call Forwarding Unconditional",
Call charges:
•
User pays the call charges up to the call forwarding location in the network.
•
User B pays the call charges from the call forwarding location to user C.
Call Forwarding Functions Supported
The system routes the following call forwarding to the exchange:
•
Call Forwarding Unconditional (CFU)
•
Call Forwarding Busy (CFB)
•
Call Forwarding on No Reply (CFNR)
•
Call Deflection (CD) by a user (forwarding a call during the ringing phase)
With all call forwarding functions the call only continues ringing at user C once it
has been forwarded to the exchange.