Tii 90-3 - Manual

P/N 92211001 • Rev B• 5/7/2008
Warranty: If this unit fails during the warranty period, contact tii customer service to authorize return. Unit may be returned prepaid.
Model 90-3
SEALED BRIDGING MODULE
Installation Note
Description
1. The TII 90-3 Sealed Bridging Module provides
sealed IDC terminations for connecting six
additional extensions to an existing phone line.
The module can be installed directly into all TII
Network Interface Devices and can be
adapted to fit into a CAC 7600 footprint using
an optional adapter.
Installation
Installing The 90-3 Into A TII
3600/3700/9600/5300 NID
1. Locate the Network Interface Device
2. Unlock the subscriber access cover screw
using a standard screwdriver (Figure 2).
3. Identify the appropriate line position to add the
bridging module.
4. Snap the bridging module to the base as
shown in Figure 3. For installation into a TII
3600/3700/9600/5300 NID, the adapter is not
required.
5. Terminate wire leads (Tip/Ring) from the
bridging module to terminals on the existing
Customer Bridge Module.
6. Do not strip wire insulation from wires to be
terminated to CBM.
7. Lift all CBM rockers to the open position as
shown (see Figure 1).
8. Hold the customer telephone wires between
thumb and index finger (approx. 1/8”
separation between wires).
Figure 2
Figure 3
Adapter
(CAC 7600 Only)
Green (Tip)
Red (Ring)
Figure 1
Telco Shield Screw Telco Access Screw
Subscriber Access Screw
Locking
Bar Tab
TII NID Base
Retaining Tab