ZyXEL Communications P8802T, Руководство пользователя

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Chapter 15 Voice
Basic Home Station VDSL2 P8802T User’s Guide
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DTMF Mode Control how the VDSL Router 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.
InBand - 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.
SIPInfo - send the DTMF tones in SIP messages.
Transport Type
Transport Type
Select the transport layer protocol (TCP, UDP or TLS) used for SIP.
AUTO is available when you select the Support Locating SIP Server
option. If you select AUTO here, the VDSL Router sends a DNS Name
Authority Pointer (NAPTR) query to locate the SIP server and get the
supported transport layer protocol(s).
FAX Option This field controls how the VDSL Router handles fax messages.
G.711 Fax
Passthrough Select this if the VDSL Router should use G.711 to send fax messages.
The peer devices must also use G.711.
T.38 Fax Relay Select this if the VDSL Router 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.
QoS Tag
SIP DSCP Mark
Setting
Enter the DSCP (DiffServ Code Point) number for SIP voice
transmissions. The VDSL Router creates Class of Service (CoS) priority
tags with this number to voice traffic that it transmits.
RTP DSCP Mark
Setting Enter the DSCP (DiffServ Code Point) number for RTP voice
transmissions. The VDSL Router creates Class of Service (CoS) priority
tags with this number to RTP traffic that it transmits.
Timer Setting
Expiration
Duration
Enter the number of seconds your SIP account is registered with the
SIP register server before it is deleted. The VDSL Router 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.)
Register Re-
send timer Enter the number of seconds the VDSL Router waits before it tries again
to register the SIP account, if the first try failed or if there is no
response.
Session Expires Enter the number of seconds the VDSL Router lets a SIP session remain
idle (without traffic) before it automatically disconnects the session.
Min-SE Enter the minimum number of seconds the VDSL Router lets a SIP
session remain idle (without traffic) before it automatically disconnects
the session. When two SIP devices start a SIP session, they must agree
on an expiration time for idle sessions. This field is the shortest
expiration time that the VDSL Router accepts.
Phone Key
Config
Table 74 VoIP > SIP > SIP Service Provider (continued)
LABEL DESCRIPTION