Cisco 8821 Administration Manual page 63

Cisco Unified Communications Manager Phone Configuration
Field Name Field Type
Or Choices
Detect Unified CM Normal
Connection Failure
Delayed
Simplified New Call UI Disabled
Enabled
Revert to All Calls Disabled
Enabled
DF bit 0
1
Lowest Alerting Line Disabled
State Priority
Enabled
Default
Normal
Disabled
Disabled
0
Disabled
Cisco Wireless IP Phone 8821 and 8821-EX Administration Guide for Cisco Unified Communications Manager
Product Specific Configuration Fields
Description
Determines the sensitivity that the phone has for
detecting a connection failure to Cisco Unified
Communications Manager (Unified CM), which is the
first step before device failover to a backup Unified
CM/SRST occurs.
Valid values specify Normal (detection of a Unified
CM connection failure occurs at the standard system
rate) or Delayed (detection of a Unified CM connection
failover occurs approximately four times slower than
Normal).
For faster recognition of a Unified CM connection
failure, choose Normal. If you prefer failover to be
delayed slightly to give the connection the opportunity
to reestablish, choose Delayed.
The precise time difference between Normal and
Delayed connection failure detection depends on many
variables that are constantly changing.
This field only applies to the wired Ethernet
connection.
Controls the user interface for off-hook dialing. When
enabled, the user cannot select a number from the
recent calls list.
Specifies whether the phone will revert to All Calls
after any call ends or not if the call is on a filter other
than Primary line, All Calls, or Alerting Calls.
Controls how network packets are sent. Packets can
be sent in chunks (fragments) of various sizes.
When the DF bit is set to 1 in the packet header, the
network payload does not fragment when going
through network devices, such as switches and routers.
Removing fragmenting avoids incorrect parsing on
the receiving side, but results in slightly slower speeds.
The DF bit setting does not apply to ICMP, VPN, VXC
VPN, or DHCP traffic.
Specifies the alert state when using shared lines. When
disabled and there is an incoming call alerting on the
shared line, the LED/Line state icon reflects the
alerting state instead of Remote-In-Use. When enabled,
the user sees the Remote-In-Use icon when there is
call alerting on the shared line.
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