NEC SV8500, Manual

Page: 1275 / 3438

VOL.2-1022
MG(PRI) (1.5M) [SCA-24PRIA/MG-24PRIA]
Connect the required cables according to the system configuration. General description of cable connection for
MG(PRI) is explained in the diagram below.
MG(PRI) Cable/Box 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 the ISDN network 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 ISDN line here. These cables are connected in Section 14.3 Startup MG(PRI) and
Basic Tests.
FRONT
Maintenance Console (PC) :
used for configuration data setting
connected to LAN
Note 1, Note 2
Note 3
Note 3
10BASE-T/100BASE-TX
RS-232C
(D-sub 9-pin)
RJ-45 serial
CONSOLE cable (option)
(serial straight-through cable)
Audio Equipment
connected to PHONE, LINE output
of audio equipment, if necessary
connected to ISDN line
B D
ALM PWR
ON
LINE LB
LINE Ether
100M LINK
CONSOLE
RESET
MUSIC
MG(PRI)
Card/Box