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Chapter 2 Installation and Operation
Installation and Operation Manual
LINK E1 Data Port Connectors
The two external E1 data ports of the VC-E1/16 and VC-E1/12 modules have
balanced or unbalanced ITU-T Rec. G.703 interfaces. The interface type is
software-selectable.
Each LINK port has one RJ-45 eight-pin connector, designated LINK 1 or LINK 2,
respectively. The connector is used for both the balanced and unbalanced
interface. Connector wiring is listed in Table 2-4.
Table 2-4. LINK Connector, Pin Functions
Pin
Function – Balanced Interface
Function – Unbalanced Interface
1
Receive Data input (ring)
Ground
2
Receive Data input (tip)
Receive Data input
3
Not connected
Not connected
4
Transmit Data output (ring)
Ground
5
Transmit Data output (tip)
Transmit Data output
Not connected
Not connected
6 to 8
The connection to equipment with balanced interface is made by any standard
RJ-45-to-RJ-45 cable.
In general, when using the unbalanced interface, it is necessary to connect the
RJ-45 connector to equipment using BNC connectors. RAD offers as an optional
accessory an adapter cable, CBL-RJ45/2BNC/E1/X, with one RJ-45 plug at one end
and two BNC female connectors at the other end.
Adapter Cables
Adapter Cable CBL-TELCO-RJ45/16E1
Adapter cable CBL-TELCO-RJ45/16E1 is used to connect to the VC-E1/16 voice
channels when all the channels use balanced interfaces.
Figure 2-5 shows the CBL-TELCO-RJ45/16E1 cable structure.
64-Pin TELCO
Connector
Cable Shield
Lug
RJ-45 Plugs
Figure 2-5. CBL-TELCO-RJ45/16E1 Cable
2-8
Connecting Cables
VC-E1/16, VC-E1/12 GM-2000 Ver. 3.2