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Cisco 9951 Standard Информация о выпуске
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.

Important Notes

This section contains important information to consider with the Cisco Unified IP Phone 8961, 9951, and
9971.

Cisco Unified IP Phone 9971 and Personal Address Book or Fast Dial features

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.

Plantronics Audio 615M Headset and Cisco Unified IP Phone 8961

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.

Cisco Unified IP Phones 9951 and 9971 one-way video calls

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.

Cisco Virtualization Experience Client 2100

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
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