Two conference phone
Sound Base units can be linked together to expand the audio coverage area. One
Sound Base acts as the primary device, and the other unit acts as the dependant
or secondary device.
In Linked Mode, the
primary base station supports either one wireless or one wired microphone. The
secondary unit supports only one wired microphone. You cannot mix microphone
kits: if you plan to connect a microphone to both sound bases, they must both
be wired microphones.
The Cisco Unified IP Conference Phone 8831 supports wired and wireless microphones. The Cisco Unified IP Conference Phone
8831NR supports only wired microphones.
The voice, dial
tone, ringer, and base LED features synchronize between the two devices when
linked together. You can link two sound bases while a call is active.
When Linked Mode is
active, the linked mode icon displays in the idle and the call screens.
The following table
summarizes the best practice to follow when deploying your conference phones in
Linked Mode. If the devices are linked in this manner, the system software
automatically detects which device is to be used as the primary and which is
the secondary one.
Table 1. Linked Mode Setup
Best Practice
Component
|
Connect to Primary
|
Connect to Secondary
|
Display Control Unit (DCU)
|
Yes
|
No
|
Network cable
|
Yes
|
No
|
Wall power
|
Yes
|
No
|
Optional Wired Microphone
|
Yes
|
Yes
|
Optional Wireless Microphone
|
Yes
|
No
|
Note |
If a DCU is
connected to the secondary device, it will display a prompt indicating that it
is a dummy DCU, but will otherwise not function.
|
Caution |
When using a Sound
Base in Linked Mode, the primary base unit must be connected using the
CP-PWR-CUBE-3 external power supply.
|
If two devices are
linked after both are registered, the user can select which is the primary
device.
A secondary device
receives upgrades to firmware seamlessly from the primary device.