Administrator’s Guide for SIP-T2_Series_T4_Series IP Phones 
318 
BLF Key 
For more information on how to configure the DSS Key, refer to Appendix D: Configuring 
DSS Key on page 549. 
Description: 
Configures a DSS key as a BLF key on the IP phone. 
The digit 16 stands for the key type BLF. 
X ranges from 1 to 29 (for SIP-T48G) 
X ranges from 1 to 27 (for SIP-T46G/T29G) 
X ranges from 1 to 15 (for SIP-T42G/T41P) 
X ranges from 1 to 21 (for SIP-T27P) 
X ranges from 1 to 3 (for SIP-T23P/G) 
X ranges from 1 to 2 (for SIP-T21(P) E2) 
Example: 
linekey.1.type = 16 
Default: 
For SIP-T48G IP phones: 
The default value of the line key 1-16 is 15, and the default value of the line key 
17-29 is 0. 
For SIP-T46G/T29G IP phones: 
The default value of the line key 1-16 is 15, and the default value of the line key 
17-27 is 0. 
For SIP-T42G IP phones: 
The default value of the line key 1-12 is 15, and the default value of the line key 
13-15 is 0. 
For SIP-T41P IP phones: 
The default value of the line key 1-6 is 15, and the default value of the line key 7-15 
is 0. 
For SIP-T27P IP phones: 
The default value of the line key 1-6 is 15, and the default value of the line key 7-21 
is 0. 
For SIP-T23P/T23G/T21(P) E2 IP phones: 
The default value is 15.