How do I set the caller ID in sipgate trunking?

Instructions for configuring the caller ID in sipgate trunking in E.164 format.

If you want to transmit your caller ID number, you must configure your system so that the desired phone number is passed in the E164 format (international format, without leading zeros or plus signs) as P-Preferred-Identity header of the INVITE:

P-Preferred-Identity: <sip:[email protected]>

If your system does not support this, the phone number can alternatively be provided in quotation marks as display name of the FROM header in the same E.164 format is passed:

FROM: "49211123456789" <sip:[email protected]>

Examples of incorrect formats that prevent the desired caller ID from being transmitted are:

• leading plus: [phone]

• missing country code: 211123456789

• 00 in the country code: 0049211123456789

• leading zero in the area code: 490211123456789

• spaces: 49 211 123456789

Suppress caller ID

If you want to completely suppress the caller ID, enter in the INVITE header privacy:id as follows:

FROM: "49211123456789" <sip:[email protected]>
Privacy: id

Caller ID display for call forwarding

You can also signal that a call has been forwarded. Please use the DIVERSION header and transmit the number again in the E.164 format:

Diversion: <[email protected]>