Linksys SPA9000 Administration Manual page 186

FAX Line Toggle Code
Referral Services Codes
Linksys Voice System Administration Guide
Toggles the line to a fax machine.
Default: #99
These codes tell the SPA9000 what to do when the user places the
current call on hold by hook flash and is listening to the second dial
tone.
One or more *codes can be configured into this parameter, such as *98,
or *97|*98|*123, etc. Max length is 79 chars. Each *code (and the
following valid target number according to current dial plan) entered on
the second dial-tone triggers the SPA9000 to perform a blind transfer to
a target number that is prepended by the service *code.
For example, after the user dials *98, the SPA9000 plays a special dial
tone called the Prompt Tone while waiting for the user the enter a target
number (which is checked according to dial plan as in normal dialing).
When a complete number is entered, the SPA9000 sends a blind REFER
to the holding party with the Refer-To target equals to
*98<target_number>. This feature allows the SPA9000 to hand off a call
to an application server to perform further processing, such as call park.
The *codes should not conflict with any of the other vertical service
codes internally processed by the SPA9000. You can empty the
corresponding *code that you do not want to SPA9000 to process.
Default: blank
Voice tab
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