Filter
Top Products
36
Chapter 6 Interfaces
Figure 6. PCM Ports on SPCI4 Boards
Figure 7. PCM Ports on SS7HDP Boards
The T1/E1 ports on the SS7 Signaling Boards are Safety Extra Low Voltage (SELV), that is, the apparatus
connects to the outside network via Network Termination units (NT1). Use twisted-pair, screened cables,
grounded at both ends, to ensure the EMC and error-free performance of the product. See also
Section 4.3.3, “Telecommunications” on page 28 for information on potential usage as TNV-1 ports.
The connectors are 8-way RJ45, and are labelled L3 and L4 in Figure 5, or L1 to L4 in Figure 6 and Figure 7.
These labels can be used together with the SS7 Signaling Board position number (see Section 5.3, “Back
Panel” on page 33) to give each port a unique identifier for wiring schedules and unit configuration.
The connector pinout and signal descriptions are shown in Table 5.
6.5 SS7 Serial Interface Ports
SS7 Signaling Boards of type SPCI2S provide two synchronous SS7 serial interface ports. Both ports are
presented in a single 26-way female high density D-type connector, and use V.11 (V.35 compatible)
electrical interface characteristics. See Appendix A.
The connector is labelled Aux in Figure 8 and on the products. Table 6 identifies the ports as A and B. This
can be used with the SS7 Signaling Board position number (see Section 5.3, “Back Panel” on page 33) to
give each port a unique identifier for wiring schedules and unit configuration.
T1/E1
Ports
L4
L3
L2
L1
T1/E1
Ports
L4
L1
ENET
Unused
Port
Table 5. PCM Interface Ports Connector Pinouts
Pin No Direction Function
1Input Receive
2Input Receive
3 Not applicable No Connection
4Output Transmit
5Output Transmit
6 Not applicable No Connection
7 Not applicable No Connection
8 Not applicable No Connection