Chapter 3 3

IP PBX Setup

SIP Basic Setting

SIP (Session Initiation Protocol) is a request-response protocol, dealing with requests from clients and responses from servers. Participants are identified by SIP URLs. Requests can be sent through any transport protocol. SIP determines the end system to be used for the session, the communication media and media parameters, and the called party's desire to engage in the communication. Once these are assured, SIP establishes call parameters at either end of the communication, and handles call transfer and termination.

¾SIP Configuration

 

Figure 3-1. SIP configuration settings

 

 

UDP Port to bind to

This is SIP Local Port 5060, if you have any specific reason for

change this port.

 

 

 

Domain

IP PBX Server’s IP address.

 

 

Allow guest calls

Enable/Disable guest calls. Default is Enable. Default is all IP.

 

 

Overlap dialing support

Enable/Disable overlaps dialing support. Default is Enable.

 

 

Allow Transfers

Enable Call Transfers.

Enable DNS SRV lookups Enable DNS SRV lookups on calls

(on outbound calls)