Chapter 22 Voice
EMG6726/8726-B10A User’s Guide
219
22.5 Phone Device
Use this screen to view detailed information of the phone devices. To access this screen, click
VoIP >
Phone > Phone Device
.
Figure 144
VoIP > Phone > Phone Device
SIP DSCP Mark
Setting
Enter the DSCP (DiffServ Code Point) number for SIP message transmissions. The EMG creates
Class of Service (CoS) priority tags with this number to SIP traffic that it transmits.
RTP DSCP Mark
Setting
Enter the DSCP (DiffServ Code Point) number for RTP voice transmissions. The EMG creates Class
of Service (CoS) priority tags with this number to RTP traffic that it transmits.
Timer Setting
SIP Register
Expiration
Duration
Enter the number of seconds your SIP account is registered with the SIP register server before it is
deleted. The EMG 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.)
SIP Register Fail
Re-try timer
Enter the number of seconds the EMG waits before it tries again to register the SIP account, if the
first try failed or if there is no response.
Session Expires
(SE)
Enter the number of seconds the EMG lets a SIP session remain idle (without traffic) before it
automatically disconnects the session.
Min-SE
Enter the minimum number of seconds the EMG 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
EMG accepts.
Dialing Interval Selection
Dialing Interval
Selection
Enter the number of seconds the EMG should wait after you stop dialing numbers before it
makes the phone call. The value depends on how quickly you dial phone numbers.
DNS SRV
Enable DNS SRV
Select this to have the EMG use DNS procedures to resolve the SIP domain and find the SIP
server’s IP address, port number and supported transport protocol(s).
The EMG first uses DNS Name Authority Pointer (NAPTR) records to determine the transport
protocols supported by the SIP server. It then performs DNS Service (SRV) query to determine the
port number for the protocol. The EMG resolves the SIP server’s IP address by a standard DNS
address record lookup.
The
SIP Server Port
and
REGISTER Server Port
fields in the
General
section above are grayed out
and not applicable and the
Transport Type
can also be set to
AUTO
if you enable this option.
Apply
Click
Apply
to save your changes.
Cancel
Click
Cancel
to restore your previously saved settings.
Table 95 VoIP > SIP > SIP Service Provider > Add new provider/Edit (continued)
LABEL
DESCRIPTION
