Cisco 6900 Series Release Notes - Page 9
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Cisco Unified IP Phone 6900 Series Release Notes for Firmware Release 9.4(1)
• Cisco Unified SIP Phone 6921
• Cisco Unified SIP Phone 6941
• Cisco Unified SIP Phone 6945
• Cisco Unified SIP Phone 6961
Where to find more information
Cisco Unified IP Phone 6921, 6941, 6945, and 6961 Administration Guide for Cisco Unified Communications
Manager 10.0 (SCCP and SIP)
Peer Firmware Sharing
Peer Firmware Sharing (PFS) improves the upgrade process by allowing Cisco Unified IP Phones to pass
software upgrades between similar models in a network.
The feature provides the following advantages in high-speed campus LAN settings:
• Limits congestion on TFTP transfers to centralized remote TFTP servers
• Eliminates the need to manually control firmware upgrades
• Reduces phone downtime during upgrades when large numbers of devices are reset simultaneously
Peer Firmware Sharing may also aid in firmware upgrades in branch/remote office deployment scenarios that
run over bandwidth-limited WAN links.
This feature is enabled by default. It has no user impact.
The feature is supported on the following phones (SCCP and SIP):
• Cisco Unified IP Phone 6921
• Cisco Unified IP Phone 6941
• Cisco Unified IP Phone 6945
• Cisco Unified IP Phone 6961
Where to find more information
Cisco Unified IP Phone 6921, 6941, 6945, and 6961 Administration Guide for Cisco Unified Communications
Manager 10.0 (SCCP and SIP).
Save Volume Change
The Save Volume Change feature allows an administrator to set phones to automatically save the volume
level for all calls. If the feature is not enabled, users can use the Save softkey to save the selected volume
level for all calls.
The feature is supported on the following phones (SCCP and SIP):
• Cisco Unified IP Phone 6921
• Cisco Unified IP Phone 6941
Features available with latest Cisco Unified Communications Manager device pack
Cisco Unified IP Phone 6900 Series Release Notes for Firmware Release 9.4(1)
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