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Updated:September 14, 2017
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This document discusses how to configure a Cisco IP Phone for Private Line Automatic Ring-down (PLAR) or Hotdial with Cisco Unified Communications Manager (CUCM).
PLAR feature is designed so, as soon as the phone goes off-hook on a specific line it dials a pre-configured number.
Contributed by Jose Villalobos, Cisco TAC Engineer.
Edited by Luis Ramirez, Cisco TAC Engineer.
Cisco recommends that you have knowledge of these topics:
Cisco Unified Communications Manager (CUCM)
Calling Seach Space (CSS)
Session Initiation Protocol (SIP) Dial Rules
The information in this document is based on these software and hardware versions:
Skinny Client Control Protocol (SCCP) & SIP phones register with CUCM
The information in this document was created from the devices in a specific lab environment. All of the devices used in this document started with a cleared (default) configuration. If your network is live, ensure that you understand the potential impact of any change.
This document can also be used with these hardware and software versions:
SCCP PLAR Configuration
In order to allow the phone to automatically dial a pre-configured phone number when the IP Phone goes off-hook, a CSS is configured with a partition that contains a translation pattern with a blank translation pattern string. This results in Cisco Call Manager immediately match this pattern. The translation pattern then transforms the called number (i.e. none) to the destination number (Hotdial) where the call is delivered.
Note: Since a Directory Number (DN) configured for PLAR dials a preconfigured number when it goes off-hook, you cannot use PLAR DN to dial any other numbers. For example, this is a typical configuration in hotel lobbies.
Step 1. Crete a partition for the PLAR destination.
Navigate to Call Routing> Class Control>Partition and then Add a New Partition. Enter the required details and then click Insert
Step 2. Create a new CSS
Navigate to Call Routing> Class Control>Calling Search Space and then click Add a New Calling Search Space.
Step 3. Create a translation pattern.
Navigate toCall Routing> Translation Pattern and then click Add a New Translation Pattern. Select the desired partition name and CSS that were previously created in Step One and Step Two. Finally, under Called Party Transformation Mask, enter the PLAR target number. Click Insert.
Note: Ensure that the Translation Pattern field is left blank.
Note: The design behind the example is base on DN 1161. 1161 is the target for the PLAR, but this configuration guarantees that 1161 can get a call from any other phone.
The CSS used in the first screenshot for the Translation Pattern has access to the target DN partition.
Step 4. Assign the desired Calling Search Space for the PLAR phone.
Navigate to Device > Phone
Click Find in order to locate all the registered IP phones in Cisco Unified Communications Manager
Select the PLAR phone, and choose the DN to PLAR
Assing the CSS to the DN for PLAR
Note: This configuration example creates a PLAR on DN 1054 to 1161, but the CSS is configured to a DN level, which provides the ability to assign another DN to a different button on the phone, allowing to make normal calls from the same IP Phone without affecting the PLAR feature.