2-4 General description
555-4001-112 Standard 05.01 March 1995
The power supply is connected to the M3000 Touchphone using a 4-pin
power connector.
WARNING
Telephone set damage
Do not plug M3000 Digital Telephone into a walljack
wired with -48 V for 2500 telephone sets. This causes
permanent damage to the M3000 telephone.
Voice
The voice channel carries normal voice communication and signaling
messages between the Meridian SL-100 system and the M3000 Touchphone.
Messages from the Meridian SL-100 system to the hardware in the M3000
Touchphone control the handsfree unit and handset, and determine the status
of the M3000 Touchphone. Messages from the Meridian Sl-100 system to
the software in the M3000 Touchphone are used for the following:
•
download data to the M3000 Touchphone
•
update the LCD screen
•
request diagnostic information from the M3000 Touchphone
•
request a partial or complete reset of the M3000 Touchphone
The M3000 Touchphone sends messages to the Meridian SL-100 system to
do the following:
•
transmit a function number
•
request initialization data to be downloaded
•
send programmable key entries
•
send telephony path activations (hookswitch, handsfree, release)
Peripheral equipment
Digital line module
The M3000 Touchphone interfaces with the Enhanced Digital Port card
(EDPC) in the Digital Line Module (DLM) of the Meridian SL-100 system
using Time Compression Multiplex (TCM) transmission. The EDPC
contains 16 Integrated Voice and Data (IVD) ports, which support 16 M2000
telephones and TADO.