ZyXEL Communications P-2612HW-F1 User Manual page 194

Chapter 10 Voice
Table 48 VoIP > SIP Settings > Advanced
LABEL
Primary
Compression
Type
Secondary
Compression
Type
Third
Compression
Type
DTMF Mode
Outbound Proxy
Enable
Server Address
Server Port
MWI (Message
Waiting
Indication)
Enable
Expiration Time
Call Forward
Call Forward
Table
Back
194
DESCRIPTION
Select the ZyXEL Device's first choice for voice coder/decoder.
Select the ZyXEL Device's second choice for voice coder/decoder. Select
None if you only want the ZyXEL Device to accept the first choice.
Select the ZyXEL Device's third choice for voice coder/decoder. Select
None if you only want the ZyXEL Device to accept the first or second
choice.
Control how the ZyXEL Device handles the tones that your telephone
makes when you push its buttons. You should use the same mode your
VoIP service provider uses.
RFC 2833 - send the DTMF tones in RTP packets.
PCM - send 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 and G.726) can
distort the tones.
SIP INFO - send the DTMF tones in SIP messages.
Select this if your VoIP service provider has a SIP outbound server to
handle voice calls. This allows the ZyXEL Device to work with any type
of NAT router and eliminates the need for STUN or a SIP ALG. Turn off
any SIP ALG on a NAT router in front of the ZyXEL Device to keep it
from re-translating the IP address (since this is already handled by the
outbound proxy server).
Enter the IP address or domain name of the SIP outbound proxy server.
Enter the SIP outbound proxy server's listening port, if your VoIP
service provider gave you one. Otherwise, keep the default value.
Select this if you want to hear a waiting (beeping) dial tone on your
phone when you have at least one voice message. Your VoIP service
provider must support this feature.
Keep the default value for this field, unless your VoIP service provider
tells you to change it. Enter the number of seconds the SIP server
should provide the message waiting service each time the ZyXEL Device
subscribes to the service. Before this time passes, the ZyXEL Device
automatically subscribes again.
Select which call forwarding table you want the ZyXEL Device to use for
incoming calls. You set up these tables in VoIP > Phone Book >
Incoming Call Policy.
Click this to return to the SIP Settings screen without saving your
changes.
P-2612HW-F1 User's Guide