User`s manual

MP-1xx/H.323
MP-1xx/H.323 User’s Manual 46 Document #: LTRT-00651
5.4 Working with H.450 Supplementary Services
H.323 MP-1xx FXS and FXO Gateways support the following supplementary services:
" Hold\Retrieve ( H.450.4).
" Consultation\Alternate.
" Transfer (H.450.2).
" Call forward (H.450.3).
To activate supplementary services on MP-1xx Gateway you should Enable Hold, Transfer and
Forward services either from Web browser or in ini file. To use these features all participated, in a
call, H.323 endpoints should comply to the H.450.1-4 standards.
5.4.1 Call Hold and Retrieve Features
" The active call can be put into Hold state by pressing phone's hook-flash button.
" The party that initiates the hold is called the holding party, the other party is called the held
party.
" After a successful hold, the held party should hear HELD_TONE and the holding party
should hear DIAL_TONE.
" Retrieve can be performed only by the holding party while the call is held and active.
" The holding party performs the retrieve by pressing the hook flash.
" After a successful retrieve the voice should be connected again.
5.4.2 Consultation\Alternate Feature
" The consolation feature is relevant only for the holding party (applicable only for MP-1xx FXS
Gateway).
" After holding a call (by pressing hook flash) the holding party hears dial tone and may now
initiate a new call which is called a consultation call.
" At the stage of hearing dial tone or dialing to the new destination (before completing the
dialing) the user may retrieve the held call by pressing the hook flash.
" The held call can’t be retrieved while hearing ring back tone.
" After the consultation call is connected, the user may switch between the held and active call
by pressing the hook flash.
5.4.3 Call Transfer
There are two types of call transfers:
" Consultation Transfer
" Blind Transfer
The common way to perform a consultation transfer is as follows:
In the transfer scenario there are three parties:
A - transferring, B – transferred, C – transferred to.
1. A Calls B.
2. B answers.
3. A presses the hook flash and puts B on hold (party B will hear a hold tone)
4. A dials C.
5. After A completed dialing C , he can perform the transfer by on-hook the A phone.