Cisco SRP521W-K9-G1 Administration Guide - Page 151

Configuring Voice Configuring Voice Settings 6 FAX Line Toggle Code Media Loopback Code Referral Services Codes Toggles the line to a fax machine. The default is #99. Use for media loopback. The default is *03. These codes tell the SRP what to do when the user places the current call on hold and is listening to the second dial tone. One or more *code can be configured into this parameter, such as *98, or *97|*98|*123, etc. Max total length is 79 chars. This parameter applies when the user places the current call on hold (by Hook Flash) and is listening to second dial tone. Each *code (and the following valid target number according to current dial plan) entered on the second dial-tone triggers the SRP to perform a blind transfer to a target number that is prepended by the service *code. For example, after the user dials *98, the SRP 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 SRP sends a blind REFER to the holding party with the Refer-To target equals to *98 target_number. This feature allows the SRP 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 SRP. You can empty the corresponding *code that you do not want the SRP to process. Cisco SRP500 Series Services Ready Platforms Administration Guide (SRP520 Models) 151