Specifications

Chapter 4 4-Wire E&M/TO Configuration
4-7
Table 5-3. E&M T1 Signaling
Detector XMT Signaling Bits
A B
RCV Signaling Bits
A B
Driver
Off 0 0
On 1 1
0 * On-Hook
1 * Off-Hook
*Don’t care (0 or 1)
NORMAL AND TANDEM CABLES
Individual E&M/TO voice cards require the purchase of the Normal mode or Tandem mode cables listed
below in Table 5-4. The type of cable used with the signaling line connector determines whether all
twelve channels of that card operate only in that mode. Physically, the Normal and Tandem cables have
one 96-pin DIN connector that plugs into the E&M card. The 96-pin DIN connector has two 50
conductor, 24 AWG cables leading to two 50-pin Telco connectors. The Telco connectors use standard RJ-
2HX pinouts for 4-wire E&M, providing six channels per connector (twelve channels per card). Figure 5-
5 and Figure 5-6 show the 4-wire E&M/TO cables.
Table 5-4. Normal and Tandem Mode Cables for 4-wire E&M/TO Card
CAC
Part Number
Cable
Length
Application Connectors
and Wiring
List
Price
005-0004-10’ 10ft
(3.05m)
Normal Mode Cable supporting E&M Types I, II, IV, and
V in Normal (Non-Tandem) Operation.
Normal operation is typical of channel equipment such as
phones, and modems, which are viewed as terminating
equipment.
C-Type 96-Pin
Male to Dual
50 Pin Telco
Male
Connectors,
24AWG
$190
005-0005-10’ 10ft
(3.05m)
Tandem Mode Cable supporting E&M Types I, II, IV, and
V in Tandem Operation. Tandem operation is typical of
switching equipment such as PBXs and CO switches which
can be said to originate traffic.
C-Type 96-Pin
Male to Dual
50 Pin Telco
Male
Connectors,
24AWG
$190