Version 5.8 519 October 2009
SIP User's Manual 9. IP Telephony Capabilities
3. A presses the hook-flash button and places B on-hold (party B hears a hold tone).
4. A dials C.
5. After A completes dialing C, A can perform the transfer by on-hooking the A
phone.
6. After the transfer is complete, B and C parties are engaged in a call.
The transfer can be initiated at any of the following stages of the call between A and C:
• Just after completing dialing C phone number - transfer from setup.
• While hearing Ringback – transfer from alert.
• While speaking to C - transfer from active.
îš„ Blind Transfer (REFER):
Blind transfer is performed after we have a call between A and B, and party A decides
to immediately transfer the call to C without speaking with C. The result of the transfer
is a call between B and C (just like consultation transfer only skipping the consultation
stage).
Notes:
• Transfer is initiated by sending REFER with REPLACES.
• The device can receive and act upon receiving REFER with or without
REPLACES.
• The device can receive and act upon receiving INVITE with REPLACES,
in which case the old call is replaced by the new one.
• The INVITE with REPLACES can be used to implement Directed Call
Pickup.
9.14.4 Call Forward
The following forms of call forward are supported:
îš„ Immediate: incoming call is forwarded immediately and unconditionally.
îš„ Busy: incoming call is forwarded if the endpoint is busy.
îš„ No Reply: incoming call is forwarded if it isn't answered for a specified time.
îš„ On Busy or No Reply: incoming call is forwarded if the port is busy or when calls are
not answered after a specified time.
îš„ Do Not Disturb: immediately reject incoming calls. Upon receiving a call to Do Not
Disturb call, the 603 Decline SIP response code is sent.
Three forms of forwarding parties are available:
îš„ Served party: party configured to forward the call (FXS device).
îš„ Originating party: party that initiated the first call (FXS or FXO device).
îš„ Diverted party: new destination of the forwarded call (FXS or FXO device).
To Next Page
Loading...
Need help?
General
