Manual

Cisco Systems, Inc. Page 58
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Cisco Unified CallConnector Mobility Service
Technical Overview
Ephone Pools
Ephone Pools are a group of mobility-ephones that are allocated or dedicated to a single mobility
application or shared among multiple mobility applications. In multi-router configurations, these
ephones must be configured on each router.
General Ephone Pools are a set of ephones that are acquired and released dynamically by a
number of mobility applications. A dedicated ephone pool is one where the ephones in that pool or
group which belong to and are only used by one mobility applications.
A mobility application can be configured with multiple pools. The application will first try to locate
ephones in the dedicated pool, if none are available it will try the general pool.
Number of Ephones for Mobility Services
The following model can be used to calculate the number of mobility ephones on the CME. The
variables include:
 Number of Concurrent SNR Sessions (MAX-SNR): This parameter sets the maximum
number of SNR sessions enabled for the Mobility Service.
 Maximum Number of Reach-out calls (MAX-CALLS): This is the maximum number of
simultaneous calls made to the user‘s numbers. This number can be set from the Server
Wizard to be from one to four.
 Maximum Number of DISA calls (DISA-CALLS): This is the number of incoming calls
allowed to access the Dial-In Access service.
 Shared SNR Numbers (NUM-SHARED): This is the number of shared SNR sessions. Each
of these requires a dedicated ephone.
The number of ephones required can be derived from:
Ephones for General Pool = MAX-SNR + MAX-CALLS
Ephones for Shared Pool = NUM-SHARED
Ephones for DISA = DISA-CALLS
The total number of ephones required for the Mobility Service would be
(MAX-SNR + MAX-CALLS) + NUM-SHARED + DISA-CALLS