Cisco O-8637-01 User Manual

Page 6

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Chapter 19 Cisco CallManager Device Mobility

Introducing Device Mobility

19-6

Cisco CallManager Features and Services Guide

O-8637-01

3.

If the device pool in the phone record matches the device pool in the matching
subnet, the system considers the phone to be in its home location, and the
phone retains the parameters of its home device pool.

4.

If the device pool in the phone record does not match the device pools in the
matching subnet, the system considers the phone to be roaming and subject
to reregistration and reapplication of device parameters.

Table 19-1

describes

the possible conditions that can arise and the system responses.

Table 19-1 Device Mobility Conditions and Responses

Condition

System Response

The physical location of the phone’s home
device pool stays the same as the physical
location of the device pools that are
associated with the matching subnet.

Note

Although the phone may have
moved from one subnet to another,
the physical location and
associated services have not
changed.

The system does not consider the
phone to be roaming, and the
phone remains registered with the
home device pool.

The matching subnet has a single device
pool that is assigned to it; the device pool
differs from the phone’s home device pool,
and the physical locations differ.

The system considers the phone to
be roaming. It reregisters with the
parameters of the device pool for
the matching subnet.

The physical locations differ, and the
matching subnet has multiple device pools
assigned to it.

The system considers the phone to
be roaming. The new device pool
gets assigned according to a
round-robin rule. Each time that a
roaming devices comes in to be
registered for the subnet, the next
device pool in the set of available
device pools gets assigned.

Physical location gets defined for the home
device pool but is not defined for the
device pools that are associated with the
matching subnet

The physical location has not
changed, so the phone remains
registered in the home device pool.

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