A Device Pool is a simple method of configuring the same parameters for a set of devices.Once you assign a device to a Device Pool, it inherits those parameters configured for the Device Pool. The seven mandatory settings are :
- Call Manager Group
- Date/Time Group
- Region
- Softkey Template
- SRST Reference
- MLPP Indication
- MLPP Preemption
Cisco Call Manager groups can be used to specify a prioritized list of up to three Call Manager with which Cisco IP Phones can register. You assign a Call Manager to a device through a Device Pool
During a failover transition , active calls are preserved and phones will re-register once the existing calls are complete.
You use Regions to specify the codec and the maximum video bandwidth that can be used on calls between devices .
Every device is in one Region, and you assign a device to a Region by specifying a Region within a Device Pool and then assigning a Device Pool to a device
Caller ID is not supported on MGCP Controlled FXS ports.
So remind this if you need it 🙂