McDewey

C H A P T E R 23 Hotline • Hotline Overview, on page 257 • System Requirements for Hotline, on page 258 • Hotline Configuration Task Flow, on page 258 • Hotline Troubleshooting, on page 269 Hotline Overview The Hotline feature extends the Private Line Automatic Ringdown (PLAR) feature, which allows you to configure a phone so that when the user goes off hook (or the NewCall softkey or Line Key gets pressed), the phone immediately dials a preconfigured number. This is useful for phones that are designated for calling emergency or "hotline" numbers. The administrator can configure a delay of up to 15-seconds. This allows the user time to place a call before the phone defaults to the hotline number. You can configure the Off Hook To First Digit Timer parameter to set the timer in Device > Device Settings > SIP Profile. Hotline adds the following additional restrictions and administrator controls for phones that use PLAR: • Hotline devices (devices configured to use hotline) that receive calls will receive calls only from other hotline devices, and will reject non-hotline callers. • You can configure a Hotline phone to call only, receive only, or both call and receive. • You can restrict the features available on a Hotline phone by applying a softkey template to the phone. • Analog hotline phones ignore inbound hookflash signals. Route Class Signaling Hotline uses route class signaling to allow Hotline phones to receive calls only from other Hotline phones. A route class is a DSN code that identifies the class of traffic for a call. The route class informs downstream devices about special routing or termination requirements. A Hotline phone can only accept calls from a Hotline phone with the same route class. Feature Configuration Guide for Cisco Unified Communications Manager, Release 15 and SUs 257