User Manual

AirLink Pro T1/E1 Rack Mount Installer’s Guide
Installation and System Administration
Rev. B - 1/97
2-13
Belden Part No. 8729 (UL Rating CMP (Plenum))
Individually shielded twisted pairs.
Berk-Tek Part No. 230249 (Plenum)
Berk-Tek Part No. 230131 (Non Plenum)
These cables have an overall foil shield.
The recommended E1 cable: The E1 signal can be either unbalanced, in which
case the coaxial cables listed can be used or it can be unbalanced, in which case
the balanced twisted pair cables can be used.
4. While holding it in this position, insert one of the leads of the cable into
the spring pin connector, below the lever.
5. Release the lever.
6. Repeat Steps 3, 4 and 5 to connect each lead.
7. Ensure that each cable lead is securely held by the spring pin connectors.
T1 Backup Connections
1. Locate the CSU terminal block on the AirLink Pro T1/E1 Rack Mount rear
panel (see Figure 3-2).
2. Follow the same procedure used for connecting T1/E1 DTE line.
3. Locate the fault signal cable connector from the external device.
4. Connect the fault signal cable to the CSU -SEL connector on the major
Alarm terminal block.
In the event of a fault in the primary T1/E1 link, each CSU generates a relay
control signal that is transmitted to the attached AirLink Pro T1/E1 Rack
Mount. The T1/E1 pair switch the protected primary line in, to provide a
protected bypass T1/E1 path.
Alarm Relay Contact Connections
If you have an application that uses the alarm relay contacts in the MAJOR &
MINOR ALARM captive-wire terminal block on the rear panel of the AirLink
Pro T1/E1 Rack Mount, connect the device cable to the ALARM-C and ALARM-
NC or ALARM-NO contacts in the MAJOR & MINOR ALARM captive-wire
terminal block (see Figure 2-5).