NEC Univerge SV9100 System Hardware Manual page 309

Issue 3.0
SV9100 System Hardware Manual
5.1.1 Description
The GCD-4COTB blade provides:
GCD-4COTB: Four analog loop start/ground start trunk circuits

One trunk status LED

One Blade status LED

Four Caller ID Circuits

Two Power Failure Transfer Circuits

Connection for GPZ-4COTF Daughter Board

The GCD-4COTB blade consumes four trunk ports ranging between ports
001~400. The CN2 connector provides connection to four analog trunk
ports, which are polarity sensitive (tip-to-tip, ring-to-ring). The power
failure circuits (CN3), however, are not polarity sensitive.
❍
CAUTION
❍
❍
❍
❍
Refer to the following tables for maximum upgrade capacities of the
GCD-4COTB blade:
Table 2-6 SV9100 Maximum 9.5" Gateway and 19" System

Capacities – Blades on page 2-12
Table 2-7 SV9100 Maximum 9.5" Base and Expansion System

Capacities – Blades on page 2-14
5.1.2 Installation
Install the GCD-4COTB blade into an available slot in the chassis. (Refer to
Figure 4-21 GCD-4COTB Blade on page 4-58
If the GPZ-4COTF is to be used, install this prior to inserting the

GCD-4COTB blade into the chassis.
When using the GCD-4COTB blade for ground start trunks,
the PBX ground must be connected as described in Chapter 3,
section 3.3.3 Install Grounding on 19" Chassis on page 3-19
for the trunks to function correctly.
The trunk ports are polarity sensitive. Be careful when wiring
the trunks.
When connecting the RJ-61 cables to the GCD-4COTB blades,
note the position of the Power Failure connector (CN3). Do
not confuse this connector as the trunk connector (CN2).
Switching from Loop Start to Ground Start is set in system
programming.
Do not wire an RJ-11 directly to the GCD-4COTB interface.
Use the appropriate RJ-61 wiring when connecting to the
GCD-4COTB.
for a layout of the blade.)
4-59