ZyXEL Communications Prestige 2302RL Support Notes page 103

MWI (Message
Waiting
Indication)
Enable
Expiration Time
Fax Option
Fax
Pass-through
T.38
Call Forward
handles the tones that your telephone makes when you push its buttons.
It is recommended that you use the same mode that your VoIP service
provider uses.
Select RFC 2833 to send the DTMF tones in RTP packets.
Select PCM (Pulse Code Modulation) to include the DTMF tones in the
voice data stream. This method works best when you are using a codec
that does not use compression (like G.711). Codecs that use
compression (like G.729) could distort the tones.
Select SIP INFO to send the DTMF tones in SIP messages.
Check this box to have your phone give you a message–waiting
(beeping) dial tone when you have a voice message(s). Your voice
service provider must have a messaging system that supports this
feature.
Use this field to set how long the SIP server should continue providing
the message waiting service after receiving a SIP SUBSCRIBE
message from the Prestige.
The SIP server stops providing the message waiting service if it has not
received another SIP SUBSCRIBE message from the Prestige before
this time period expires.
This field controls how the Prestige handles fax messages.
Select this radio button to have the Prestige send fax messages over
G.711. The peer devices must also use G.711.
Select this radio button to have the Prestige send fax messages over the
IP network as UDP or TCP/IP packets. It provides better transmission
quality than fax pass-through but may have inter-operability problems.
The peer devices must also use T.38.
All contents copyright (c) 2007 ZyXEL Communications Corporation.
Prestige 2302RL Support Notes
103