SIP Short Codes

Last Updated : May 03, 2022 |

Outgoing SIP calls are largely processed through short codes in the same way as for other line types. The following specific notes apply:

Note

Description

En-Bloc Dialing is Required

SIP Lines do not use overlap dialing. They expect to receive the full destination number, called 'en-bloc' dialing.

  • The short code used to route calls to a SIP Line should use a ; (semi-colon) character at the end of the short code field. That character instructions the system to wait for dialing to be completed before using the short code.

  • Dialing complete is indicated by either:

    • the dialer pressing #

    • the device or application being used sending a dialing complete signal.

    • the IP Office's Dial Delay Time expiring. The default is 4 seconds.

Caller ID Characters

For SIP URIs configured to Auto (the default), the short code Telephone Number field characters used to control the sending of the caller ID number are supported. Those characters are A, W, S and SS.

Host ID

Short codes used to route the call to a SIP line can specify the host to be used for To and R-URI headers. This is done in the short code's Telephone Number field by adding the host as a quoted suffix.

For example, N"@example.com". The value must be enclosed in " " quotation marks in order to prevent its characters being interpreted as short code wildcards.