Cisco SERIES 7970 - Manual (Page 17)

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Cisco Unified IP Phone Administration Guide for Cisco Unified CallManager 5.0 (SCCP), Cisco Unified IP Phones
OL-8148-01
Chapter 4 Configuring Settings on the Cisco Unified IP Phone
Device Configuration Menu
An option may also display one of more of the designations or icons shown in
Table 4-4 :
Table 4-4 Cisco Unified CallManager Server Designations
Designation Description
SRST Indicates a Survivable Remote Site Telephony router
capable of providing Cisco Unified CallManager
functionality with a limited feature set. This router
assumes control of call processing if all other Cisco
Unified CallManager servers become unreachable.
The SRST Cisco Unified CallManager always
appears last in the list of servers, even if it is active.
You configure an SRST router address in the Cisco
Unified CallManager Administration SRST
Reference Configuration page (choose System >
SRST). You configure an SRST reference in the
Device Pool Configuration page (choose System >
Device Pool).
TFTP Indicates that the phone was unable to register with
a Cisco Unified CallManager listed in its
configuration file and that it registered with the
TFTP server instead.
(Authentication icon)
Indicates that the connection to the Cisco
Unified CallManager is authenticated. For more
information about authentication, refer to Cisco
Unified CallManager Security Guide.
(Encryption icon)
Indicates that the connection to the Cisco
Unified CallManager is authenticated and
encrypted. For more information about
authentication and encryption, refer to Cisco Unified
CallManager Security Guide.