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Today I want to talk about a testable UCM feature, call park, this will be the first one of a series including topics like call pickup, barge, call back and other supplementary services like UCM conference and transfer features, hold retrieval, etc.
Call Park is a feature that allows you to hold a call within UCM to later be retrieved from other phone in the system.
There are two flavors of the Call Park Feature, the traditional Call Park in which a call is held in a park slot by using the park softkey on the phone and retrieved from other phone in the system by dialing the park slot number, and the new Directed Call Park feature, where the user can transfer the call to the park slot and retrieve it from other system phone by dialing the retrieval access code plus the call park number, this call park mode allows a user to monitor through a BLF Button on the phone whether the call park slot is in use or not, furthermore the user can take advantage of this BLF/SD button to transfer calls to the park slot. The main difference between the two is that in the traditional Call Park, the parking phone cannot choose the call park number (it will be assigned by the system) which can be done with the Directed Call Park feature. In both cases there can be only a single call parked.
Let’s visit configuration steps.
Call Park
Go to the UCM-> Call Routing-> Call Park Menu and
- Assign a number or range of numbers (max 100) available for the call park feature
- Select a partition, (this could be the same internal partition you used with your phone lines for sake of simplicity), and that is reachable for all the system phones
- Select an UCM server; be aware that calls are parked where the parking phones are registered to, so it may be convenient to create two call park number ranges, one for each server, assuming you have a pub/sub pair
Make sure also that the phone softkey template includes the Park Softkey, Standard User should be good.
In addition, there are two service parameters (located in Service Parameters-> Call Manager service) related to this particular feature, the Call Park Display Timer which sets the time the park slot number is displayed on the phone screen after you hit the Park Softkey and the Call Park reversion timer that defines the maximum time the call can be parked before it returns to the parking phone.
Directed Call Park
In this case go to UCM-> Call Routing-> Directed Call Park Menu
- Assign a number or range of numbers (max 100) available for the call park feature.
- Select a partition, (this could be the same internal partition you used with your phone lines, for sake of simplicity), and that is reachable for all the system phones
- The Reversion Number and Reversion CSS field sets the number to which the call returns after the Call Park Reversion timer service parameter has expired (if left blank the call will return to the parking phone) and Calling Search Space to reach that number respectively
- The Retrieval Prefix is the code users must dial along with the call park number to retrieve the call, be aware that the only way a directed call park call can be retrieved is with the use of this code first, no retrieval occurs when the park number is dialed directly (unlike the traditional call park feature), in this case the system thinks you are trying to park your call in that slot
To configure the BLF button to monitor the directed call park slot, you should create a phone button template going to
Device-> Device Settings-> Phone Button Template
for your phone type and add the BLF Directed Call Park button, save it and assign it to the phone in which you want to perform the park function. Once in the phone configuration, select the newly created button and assign it the Directed Call Park number defined in previous step. This BLF button will blink when the park slot is in use.
Users can then transfer the calls to the park slots by using the normal transfer function, i.e., with the active call, press the transfer softkey, then press the BLF Directed Call Park button and finally the transfer softkey again or just going on-hook, if the on hook transfer service parameter is set to enable (disabled by default).
Well, be familiar with these configurations and play with these features, you could get easy points in your lab.
–
Otto Sanchez – CCIE #25592 (Voice)
Support Engineer – IPexpert, Inc.
Web: http://www.IPexpert.com
Tags: Call Park, ccie voice, Directed Call Park
