ZyXEL Communications X6004 User Manual

Chapter 7 SIP Server

X6004 User’s Guide

Use this screen to set up the SIP server settings on the X6004. SIP clients, such as the IP 
phones on your network, must enter this information when registering with the X6004. To 
access this screen, click Configuration > PBX > Server Configuration > SIP Server.

Figure 83   Configuration > PBX > Server Configuration > SIP Server > Global Set

Each field is described in the following table.

Table 18   Configuration > PBX > Server Configuration > SIP Server > Global Set

SIP Server Realm 

Name:

A realm is a set of usernames and passwords used by SIP client devices to 

authenticate with a SIP server. The X6004 supports a single realm. When SIP 

clients register with the X6004, they must provide the name of the realm they 

belong to as well as the username and password. Type the realm name which the 

extensions that register with the X6004 must provide for authentication.

Port:

Enter the X6004’s listening port number or keep the default value. This is the port 

number your SIP clients need to use to register with the X6004.

Default SIP Client 

Registration 

Expiration

The X6004 is a SIP registrar server. A SIP registrar server maintains a database 

of SIP identity-to-IP address (or domain name) mapping. The X6004 checks your 

username, password and realm when you register. 
Enter the number of seconds SIP clients are registered with the X6004 before their 

registration record is deleted. SIP clients should be configured to automatically try 

to re-register with the X6004. 
Make sure that the client SIP devices are configured to re-register at an interval 

smaller than the time set in this field.

RTP Port Range

When you make a VoIP call using SIP, the RTP (Real time Transport Protocol) is 

used to handle voice data transfer.
Enter the listening port number(s) for RTP traffic or keep the default values. Enter 

the port number at the beginning of the range in the first field and enter the port 

number at the end of the range in the second field.

Default Ring Time Specify for how many seconds the X6004 sends a ringing tone to client devices for 

incoming calls. 

Codec G723.1

Select Enable to turn on support for G723.1 voice codec or select Disable to turn 

off support for the G723.1 voice codec. 

Note: This setting only takes affect after a system restart.