Panasonic KX-TD500 System Reference Manual page 1171

Item
Assigning Items
Number
21 Message Waiting Indication
22 Mail Box Number
Conditions
This command cannot be used if "Slot Assignment (SLA)" does not have any of
PLC, SLC, HLC, MSLC, DLC, DHLC, ESLC or OPX cards programmed or if "DN
Assignment (DNA)" does not have the extension number programmed.
Index
Number
01
Telephone Type
02 If PITS telephone KX-T123230D is connected, select 04: KX-T123235 (7130),
for PITS Model.
Refer to Section 10-G-1.01 "Station (1/4)" for further conditions.
1(None) : The KX-T7051 cannot receive the message
waiting indication.
2(Lamp) : The KX-T7051 can receive the message
waiting indication.
Maximum of ten digits consisting of numbers,
Assignable telephone types differ depending on the card
types connected to the extensions, as follows:
Card Type Telephone Type Assignable
PLC APITS
SLC SLT
HLC APITS or SLT
OPX OPX
MSLC SLT (with MESSAGE lamp)
DLC DPITS
DHLC APITS, DPITS or SLT
ESLC SLT (with MESSAGE lamp)
11-C-45
Input Value
: clearing function is effective
for the item
Continued
CLR
and #