Dialogic SS7G21 - Manual (Page 36)

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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.
T 1 / E 1
P o r t s
L4 L3 L2 L1
T 1 / E 1
P o r t s
L4 L1
ENET
U n u s e d
P o r t
Table 5. PCM Interface Ports Connector Pinouts
Pin No Direction Function
1 Input Receive
2 Input Receive
3 Not applicable No Connection
4 Output Transmit
5 Output Transmit
6 Not applicable No Connection
7 Not applicable No Connection
8 Not applicable No Connection