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Chapter 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.
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SIP 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.
Max Registration Time
Maximum duration of incoming registration/subscriptions we allow.
Default
3600 seconds.
Min Registration Time
Minimum duration of registrations/subscriptions. Default
60
seconds
Default
Incoming/Outgoing
Registration Time
Default duration (in seconds) of incoming / outgoing registration.
Language
Set default language for all users.
Server UserAgent
Enable you to change the trunk User agent string, Default is
PBX.
DTMF Mode
Set default DTMF mode for sending DTMF. Default:
rfc2833.
Table 3-1. SIP configuration description