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Cisco Unified IP Phone 8961, 9951, and 9971 Release Notes for Firmware Release 9.3(2)SR1

Cisco Unified Video Camera firmware

The Cisco Unified Video Camera is supported on Cisco Unified Communications Manager Release 7.1(5)

and later.

This section contains important information to consider with the Cisco Unified IP Phone 8961, 9951, and

9971.

Users of the Personal Address Book or Fast Dial feature may receive an error message followed by a request

to log back into the network. In DNS round robin configurations, the phone does not retain access with the

same IP address. In this situation, the phone displays a message to indicate that the user must log into the

phone again.

The Plantronics Audio 615M headset is not compatible with the Cisco Unified IP Phone 8961. You must use

an alternate headset type for this IP phone. For more information, see CSCth71104.

Plantronics CS50 USB Headset and Cisco Unified IP Color Key Expansion

Module

The Plantronics CS50 USB headset causes the phone to request power from the switch even though the headset

is self powered. In this case, if a device such as a camera or expansion module is connected and active on the

phone, the switch will reject the power request for the headset because the power budget has been exceeded.

In this case, the headset cannot be used.

Because of limitations in the H.264 video signaling standards, Cisco Unified IP Phones 9951 and 9971 may

not correctly display video that is received from devices supporting resolutions greater than 640 x 480. In this

case, the user sees a black video screen.

To ensure that video from such devices displays properly on the IP phone, configure high definition phones

and Cisco Unified IP Phones 8961, 9951, and 9971 into different call regions and limit the video bandwidth

to 384 kb/s when calling between regions.

The Cisco Virtualization Experience Client (VXC) 2100 Series are zero clients designed to deliver a user

desktop from a centralized host server, providing access to desktop applications as if they were available

Cisco Unified IP Phone 8961, 9951, and 9971 Release Notes for Firmware Release 9.3(2)SR1

Important Notes