User's Manual

Chapter 21 Voice 174
FAX Option This field controls how the Router handles fax messages.
Select G.711 Fax Passthrough to have the use G.711 to send fax messages. The
peer devices must also use G.711.
Select T.38 Fax Relay to have the Router 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
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
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 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 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 Router lets a SIP session remain idle (without
traffic) before it automatically disconnects the session.
Min-SE Enter the minimum number of seconds the 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 Router accepts.
Phone Key Config
Call Return Specify the key combinations that you can enter to place a call to the last number
that called you.
One Shot Caller
Display Call
Specify the key combinations that you can enter to activate caller ID for the next call
only.
One Shot Caller
Hidden Call
Specify the key combinations that you can enter to deactivate caller ID for the next
call only.
One Shot Call
Waiting Enable
Specify the key combinations that you can enter to put a call on hold when you are
answering another.
Call Waiting
Enable
Specify the key combinations that you can enter to turn on the call waiting function.
Call Waiting
Disable
Specify the key combinations that you can enter to turn off the call waiting function.
Table 98 SIP Server (continued)
LABEL DESCRIPTION