ZyXEL VMG4927-B50A User Guide - Page 221
Phone Device
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Chapter 21 Voice Table 96 VoIP > SIP > SIP Service Provider > Add new provider/Edit (continued) LABEL DESCRIPTION SIP DSCP Mark Setting Enter the DSCP (DiffServ Code Point) number for SIP message transmissions. The VMG creates Class of Service (CoS) priority tags with this number to SIP traffic that it transmits. RTP DSCP Mark Enter the DSCP (DiffServ Code Point) number for RTP voice transmissions. The VMG creates Class Setting 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 VMG 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 Enter the number of seconds the VMG waits before it tries again to register the SIP account, if Re-try timer the first try failed or if there is no response. Session Expires (SE) Enter the number of seconds the VMG lets a SIP session remain idle (without traffic) before it automatically disconnects the session. Min-SE Enter the minimum number of seconds the VMG 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 VMG accepts. Dialing Interval Selection Dialing Interval Selection Enter the number of seconds the VMG 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 VMG use DNS procedures to resolve the SIP domain and find the SIP server's IP address, port number and supported transport protocol(s). The VMG 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 VMG resolves the SIP server's IP address by a standard DNS address record lookup. Apply Cancel 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. Click Apply to save your changes. Click Cancel to restore your previously saved settings. 21.5 Phone Device Use this screen to view detailed information of the phone devices. To access this screen, click VoIP > Phone > Phone Device. Figure 129 VoIP > Phone > Phone Device VMG4927-B50A / VMG9827-B50A User's Guide 221