VoIP trunk
NOTE: Configuration examples can be found under Category:PBX
Contents
What can I do here?
Add a VoIP trunk.
Screenshot

Fields
Description has a description of the VoIP trunk and by default this value is also used for Outgoing name (CLI).
Account ID and Password together form the login for the device and these are automatically generated.
Number of lines indicates the number of calls a user can have on their device. A forwarded call does not count as a call. For more than two lines, additional costs may be charged.
Internal number (extension) is the internal number with which the VoIP account can be dialed.
The Use the CLI information from the trunk ensures that a VoIP server or VoIP PBX can determine which number from their range is sent along. The format for this is country code with +, area code without 0, phone number (). If this is not possible because, for example, the PBX cannot handle the +, then "31501234567" is allowed. More about CLI's and DID's.
Outgoing number (Caller ID) is the number that the called party sees on their screen. You can only enter numbers that have been assigned to the account.
Outgoing name is used to send, for example, the name of the device in the screen during an internal transfer
In Call access you can specify whether you want to create certain restrictions for this VoIP account. By default, a user can call anywhere.
Advanced (SIP) settings
If you have created a VoIP trunk and you click on edit, you will find an extra link to Edit Advanced (SIP) settings. Here you'll find things like Connection handling, NAT support, Extra security and extra settings for Caller ID.
Note: For most Asterisk PBXs, the "CLI header" should be set to "Remote-Party-ID".
Tip: Connecting based on IP
It is possible to set up a trunk based on the external IP address of the PBX. Under 'Edit Advanced (SIP) settings' it is possible to set a 'Fixed hostname'. Here you enter the external IP address of the PBX.