NEC SV8500, Manual

Page: 893 / 3438

VOL.2-640
MG-COT Card [SCA-6COTB]
Connect the required cables according to the system configuration. The figure below shows a cable configura-
tion example.
MG-COT Cable Connection Diagram (Front)
Note 1:
Cable of external hold tone source needs to be conformed with all-purpose
φ
3.5 mono-aural ear phone
jack. Adjustment of output level for external hold tone source need 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 take proper connection to grounding of audio equip-
ment.
Note 3:
Do not connect LAN and PSTN line here. These cables are connected in Section 10.3 Startup MG-COT and
Basic Tests.
Note 4:
When you turn off the power, disconnect the CONSOLE cable in advance of turning off the power.
FRONT
connected to LAN
10BASE-T/100BASE-TX
MG1 MG3 MG5
MG0 MG2 MG4
ALM PWR
Ether OPERATION
MG0 MG2 MG4 PFT
MG1 MG3 MG5
ON
LINE
100M LINK
CONSOLE
PSTN
Audio Equipment
connected to PHONE, LINE output
of audio equipment, if necessary
Maintenance Console (PC) :
used for configuration data setting
RS-232C
(D-sub 9-pin)
RJ-45 serial
Analog Phone
CONSOLE cable (option)
Note 1, Note 2
Note 3
Note 3
MG6
RESET
MUSIC
Note 4
B A
1
RJ-11 connector
pin assignment
2
A: RING
B: TIP