NEC Univerge sv8500 Manual page 1275

Connect the required cables according to the system configuration. General description of cable connection for
MG(PRI) is explained in the diagram below.
10BASE-T/100BASE-TX
connected to LAN
Note 3
connected to ISDN line
Note 3
Cable of external hold tone source needs to be conformed with all-purpose 3.5
Note 1:
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
range.
If audio equipment has a ground terminal, be sure to make proper connection to grounding of audio equip-
Note 2:
ment.
Do not connect LAN and ISDN line here. These cables are connected in Section 14.3 Startup MG(PRI) and
Note 3:
Basic Tests.
MG(PRI) Cable/Box Connection Diagram (Front)
100M LINK B D
CONSOLE
ON
PWR ALM
LINE LB
Ether LINE
FRONT
VOL.2-1022
MG(PRI) (1.5M) [SCA-24PRIA/MG-24PRIA]
Maintenance Console (PC) :
used for configuration data setting
RS-232C
(D-sub 9-pin)
CONSOLE cable (option)
(serial straight-through cable)
RJ-45 serial
MG(PRI)
MUSIC Card/Box
RESET
Audio Equipment
connected to PHONE, LINE output
of audio equipment, if necessary
Ω
Note 1, Note 2
φ mono-aural ear phone
- 50k Ω . Make sure not to exceed this