TB30s SIP Administrator Guide v1.3
Page 208 of 259
Call Park Type
This is not exactly a new feature but a new way of supporting traditional Call
Park and Park Retrieve. From now on there are 2 modes for implementing
them: The first (set by default) is the one recommended by draft-sipping-
service-examples and the other one is quite similar to a blind transfer. The
latter was already supported as unique Call Park/Retrieve method in TB30SI
versions.
Call Park/Retrieve Park implementation modes
Both modes requires a proper enviroment that supports Call Park.
Mode 0:
Call park is achieved by TB30 sending a REFER message to the park
extension with
- Request-URI: the park extension
- Refer-to: the party which is going to be parked
- Replaces (param inside Refer-to header): dialog between parked and the
one who parks.
Retrieve Park is achieved by TB30 sending a SUBSCRIBE message to the
park extension and then, when park answers a NOTIFY with the dialog
identifiers, it has to send an INVITE (with Replaces header) again to the
previously parked party.
Mode 1:
Call park is achieved by TB30 sending a REFER message to the other party
equal to the one sent if a blind transfer to the Park extension was done.
Park Retrieve is achieved by TB30 sending an INVITE message to the park
extension. This one will manage the rest of signalling to finalize the retrieve.
Also in both cases, park extension is configured as it used to be, by the
proper option in Advanced | Call Features menu in Web GUI.
Feature activation
This feature can only be set by Autoprovisioning with the parameter
Call_park_type in [sip] section of the config files (both common and specific-
MAC):
[sip]
…
CallParkType=0 (default value. Mode 1 is activated with value 1)
…
Содержание TB30
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