Call Pickup - AudioCodes Mediant 800B User Manual

User's Manual
The flowchart above describes the following "double" call-hold scenario:
1. A calls B and establishes a voice path.
2. A places B on hold; A hears a dial tone and B hears a held tone.
3. A calls C and establishes a voice path.
4. B places A on hold; B hears a dial tone.
5. B calls D and establishes a voice path.
6. A ends call with C; A hears a held tone.
7. B ends call with D.
8. B retrieves call with A.
Notes:
•
If a party that is placed on hold (e.g., B in the above example) is called by another
party (e.g., D), then the on-hold party receives a call waiting tone instead of the
held tone.
•
While in a Double Hold state, placing the phone on-hook disconnects both calls
(i.e. call transfer is not performed).
•
You can enable the device to handle incoming re-INVITE messages with
"a=sendonly" in the SDP, in the same way as if "a=inactive" is received in the
SDP. This is configured using the SIPHoldBehavior parameter. When enabled, the
device plays a held tone to the Tel phone and responds with a 200 OK containing
"a=recvonly" in the SDP.
26.2

Call Pickup

The device supports the Call Pick-Up feature, whereby the FXS user can answer someone
else's telephone call by pressing a user-defined sequence of phone keys. When the user
dials the user-defined digits (e.g., #77), the incoming call from the other phone is forwarded
to the FXS user's phone. This feature is configured using the parameter KeyCallPickup.
Note:
same Trunk Group ID.
Version 7.0
The Call Pick-Up feature is supported only for FXS endpoints pertaining to the
26. Configuring Supplementary Services
533 Mediant 800B Gateway and E- SBC