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7.6.3.1.3 Configuring the SIP Parameters<br />

Configuring the Local Domain Name (optional)<br />

By default, the Local Domain Name field is empty.<br />

It is not mandatory to enter a Local Domain Name. It is used only when the OmniPCX Office<br />

has a subscription to an Internet access provider.<br />

1. By OMC (<strong>Expert</strong> View):<br />

System -> Voice on IP -> VoIP: Parameters -> SIP tab<br />

2. Review/modify the following parameter:<br />

Local Domain Name<br />

This name is used in the domain part of the FROM header. It<br />

can be for example the domain name of the provider.<br />

Configuring the Timer<br />

Refer to Public SIP Trunking - Configuration procedure - Configuring Timers<br />

1. By OMC (<strong>Expert</strong> View):<br />

System -> Voice on IP -> VoIP: Parameters -> SIP tab<br />

2. Review/modify the following parameters:<br />

Timer T1<br />

Timer T2<br />

Number of Retries<br />

Retransmission timer: waiting duration before re-sending a<br />

request.<br />

Default value: 1000 ms<br />

Response timer<br />

Note:<br />

T1 and T2 timers are defined in the RFC3261.<br />

Maximum number of retries.<br />

Configuring the Registration Parameters<br />

Refer to Public SIP Trunking - Configuration procedure - Configuring Registration Parameters<br />

1. By OMC (<strong>Expert</strong> View):<br />

System -> Voice on IP -> VoIP: Parameters -> SIP tab<br />

2. In the Registration pane, check the Requested box<br />

3. Review/modify the following parameters:<br />

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