ZyXEL Communications P-2612HNU-F1 User Manual page 230

Chapter 16 VoIP
Table 56 VoIP > SIP > SIP Service Provider (continued)
LABEL
DTMF Mode
Transport Type
Transport Type
FAX Option
G711 Fax
Passthrough
T38 Fax Relay
Outbound Proxy
Enable
Server Address
Server Port
QoS Tag
SIP TOS Priority
Setting
RTP TOS
Priority Setting
Timer Setting
Expiration
Duration
Register Re-
send timer
Session Expires
230
DESCRIPTION
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.
RFC2833 - 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 the transport layer protocol (TCP, UDP or TCP) used for SIP.
This field controls how the ZyXEL Device handles fax messages.
Select this if the ZyXEL Device should use G.711 to send fax messages.
The peer devices must also use G.711.
Select this if the ZyXEL Device should send fax messages as UDP or
TCP/IP packets through IP networks. This provides better quality, but it
may have inter-operability problems. The peer devices must also use
T.38.
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.
Enter the DSCP (DiffServ Code Point) number for SIP message
transmissions. The ZyXEL Device creates Class of Service (CoS) priority
tags with this number to SIP traffic that it transmits.
Enter the DSCP (DiffServ Code Point) number for RTP voice
transmissions. The ZyXEL Device creates Class of Service (CoS) priority
tags with this number to RTP traffic that it transmits.
Enter the number of seconds your SIP account is registered with the
SIP register server before it is deleted. The ZyXEL Device automatically
tries to re-register your SIP account when one-half of this time has
passed. (The SIP register server might have a different expiration.)
Enter the number of seconds the ZyXEL Device waits before it tries
again to register the SIP account, if the first try failed or if there is no
response.
Enter the number of seconds the ZyXEL Device lets a SIP session
remain idle (without traffic) before it automatically disconnects the
session.
P-2612HNU(L)-FxF User's Guide