Specifications

can come back later to revise it, once the expected
routes are added.
4.6 SIP Trunk Configuration
A SIP trunk refers to a SIP account on a remote call routing or gateway device. A practical example is
an account at an Internet Telephony Service Provider (ITSP) where a call is routed to a SIP client or
off-ramped to an analog subscriber via PSTN. One could also build SIP trunk to a remote IP PBX to
reach its extensions and PSTN ports.
The SIP TRUNK MANAGEMENT page allows the administrator to configure SIP trunks used by IP
PBX. Select Trunk -> SIP Trunk, and one can add, edit, and delete SIP trunks. Go to Service -> IP
PBX Service, and click RELOAD to activate changes.
4.6.1 Add a SIP Trunk
1. Click the Add New tab.
2. Enter settings shown in
Table 4.6.
3. Click ADD to see the newly added SIP trunk in the Trunk Identifier.
4.6.2 Edit a SIP Trunk
1. Click the Trunks tab, and More to see more information.
2. Edit settings shown in
Table 4.6 in a row.
3. Click APPLY in the row to update the information.
4.6.3 Delete a SIP Trunk
1. Click the Trunks tab, and select a trunk identifier.
2. Click DEL to remove the SIP trunk from the Trunk Identifier.
Table 4.6 SIP Trunk Configuration Settings
Field Description
Trunk Identifier A unique number consisting of digits only. Usually give the
phone number issued by the ITSP for consistency.
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