PLANET VIP-350PT - Manual (Page 69)

[69/168]
• MWI: Message Waiting Indication
Whenever the【MWI】 is pressed, The IP Phone will try to make a call to the SUBSCRIBEd MWI
account. However, some ISPs provide voice mailbox access by specific server feature access code.
Thus, if you want to send such server feature access code to server, such as “#”, you may define
the access code here. If defined, this terminal will make an outbound call to the defined code; for
example, if “#” is configured, it will call to “sip:#@ISP.com”. Leave it blank for terminal to call to the
SUBSCRIBEd MWI account.
• Server Hold
Whenever the【HOLD】 is pressed, The IP Phone will try to put the peer on hold by SIP re-INVITE,
and retrieve the peer by SIP re-INVITE if the 【HOLD】is pressed again. Besides, this terminal will
play music locally whenever it is put on hold by the peer. However, some ISP provide hold operation
as well as server generated music-on-hold stream through their servers. Thus, to integrate such
server/IP-PBX, you may re-define the operation of 【HOLD】. Once defined, such as “&”, the
terminal will generate the defined server hold access code as DTMF sequence by either inband or
outband (rfc2833 or SIP INFO) during conversation to invoke server hold features. Leave it blank for
terminal to perform HOLD/unHOLD operations by SIP re-INVITE locally.
• Call Pickup: Default is “**”. The IP Phone supports directed call pickup as well as group call
pickup.
Specify the group pickup code to pick up a ringing call of the same group (RFC4235-Dialog Event
Page, RFC4462-Event Notify for Resource List, RFC2387-Muptipart-Related MIME type, and
draft-ietf-sipping-service-examples-10.txt.
For example, if Bob and Peter are part of a work group at example.com that can pick up each
others calls. Alice calls Bob who does not answer. Peter wishes to pick up the call then he could
dial this specified “Call Pickup” code followed by Bob’s number, such as “**Bob”, where “**” is the
assumed “Call Pickup” code. Then Peter’s terminal will send a SUBSCRIBE to Bob to retrieve the
dialog information. Bill then generates an INVITE with a Replaces to Alice. Alice answers the
INVITE and sends a CANCEL to stop Bob's phone ringing. Note that the order of the
CANCEL/ACK sequence in message-9 through message 14 is not significant.