NEC SV8500, Manual

Page: 574 / 3438

VOL.2-321
MCMG [SCA-4LC2COTA/MG-4LC2COTA]
Connect the required cables according to the system configuration. The figure below shows general description
of cable connection for MCMG.
MCMG Cable Connection Diagram (Front)
Note 1:
Cable of external hold tone source needs to be conformed with all-purpose 3.5 φ mono-aural ear phone
jack. Adjustment of output level for external hold tone source needs to be started from low and to higher to
avoid over-current. The tuning of volume level sent is to be done by monitoring from the telephone terminal
connected over PSTN and tuning the output level of external hold tone source. Input impedance from the
external hold tone source needs to be within the ranges of 8
Ω - 50k Ω . Make sure not to exceed this range.
Note 2:
If audio equipment has a ground terminal, be sure to make proper connection to grounding of audio equip-
ment.
Note 3:
Do not connect LAN and PSTN line here. These cables are connected in 7.3 Startup MCMG and Basic
Tests.
MG1 MC1 MC3
MG
MC
MG0 MC0 MC2
ALM PWR
Ether
OPERATION
MG0 MC1 MC0 MC2 MC3 MG1
ON
LINE
100M LINK CONSOLE
PFTRD
RESET
MUSIC
FRONT
MCMG Card/BOX
Maintenance Console (PC) :
used for configuration data setting
connected to LAN
10BASE-T/100BASE-TX
RS-232C
(D-sub 9-pin)
RJ-45 serial
Note 1, Note 2
Note 3
CONSOLE cable (option)
(serial straight-through cable)
Audio Equipment
connected to PHONE, LINE output
of audio equipment, if necessary
Analog Phone
FAX
PSTN