Appendix
574
T57W
T54W/T33P/T-
33G
T48U/S-
/G
T46U/S-
/G
T42-
U/
T42-
S/
T41-
S
T42-
G/
T41-
P
T40P-
/G
T29G
T53W/T-
53
/T43U
/T27G
CP9-
20
T31P/T31G/-
T31/
T30P/T30/
T23P/T23G
/T21(P) E2
T19
(P)
E2
Description
(Flash-
ing)
(Flash-
ing)
/
/
/
/
/
/
/
The shared line
receives a ring-
back tone
(Flash-
ing)
(Flash-
ing)
/
/
/
/
/
/
/
The shared line
receives an
incoming call
/
/
/
/
/
/
/
The shared line
is in con-
versation
/
/
/
/
/
/
/
The shared line
conversation is
placed on pub-
lic hold
(Flash-
ing)
(Flashing)
(Flash-
ing)
(Flash-
ing)
/
/
/
(Flash-
ing)
/
/
USB flash
drive/PSTN box
is detecting
(PSTN box is
only applicable
to CP920)
/
/
/
/
/
USB flash drive
is detected
High Definition
Voice