Yealink SIP-T48G Administrator's Manual page 564

Administrator's Guide for SIP-T2_Series_T4_Series IP Phones
Phone Model
SIP-T23P/G
SIP-T21(P) E2
Note
The programable key takes effect only if the IP phone is idle.
DSS key can be assigned with various key features. The parameters of the DSS key are
detailed in the following:
Parameter
linekey.X.type
Parameter-
programablekey.X.type
Description
550
Line Key Programable Key
3
2
Configuration File
<y0000000000xx>.cfg
Configures key feature for the DSS key.
For line keys:
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)
For programable keys:
X=1-10, 12-14 (for SIP-T48G/T46G)
X=1-10, 13 (for SIP-T42G/T41P)
X=1-14 (for SIP-T29G/T27P)
X=1-10, 14 (for SIP-T23P/T23G/T21(P) E2)
For line keys:
Valid types are:
N/A

Conference

Forward

Transfer

Hold

DND

ReCall

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