Specifications

2 Specification
10
2.2.4 Protocol Resource Support
When terminating SS7 signaling, the DSI SS7MD board runs the SS7 Message Transfer
Part, Layer 2 (MTP2) on the board and works in conjunction with higher layer protocols
including MTP3, ISUP, SCCP, TCAP, MAP, INAP and IS41 running on the host. The
protocols are enabled by software licenses. See Section 2.4, “Software Licenses.
The DSI SS7MDL4 board supports passive monitoring of HDLC format data links
including, for example, SS7, LAPB, LAPD, ISDN, and DPNSS. In this mode, the
received messages are directly reported to the application.
It is possible to use monitor and terminate protocol operation concurrently on the
same signaling board.
2.2.5 Visual Indicators
The DSI SS7MDL4 board includes the following visual indicators:
T1/E1/J1 dual-color Green/Red status LEDs:
Green indicates a valid link
Red indicates a line alarm
Note: Only the LEDs 0, 1, 2, and 3 are active (LEDs 4, 5, 6, and 7 are reserved for future use).
2.2.6 Power Requirements
Power requirements are described as follows:
+12 VDC power
1.1 A typical, 1.4 A max.
Power dissipation
17 W max.
2.2.7 Airflow Requirements
The board should be installed in host computers providing airflow of at least 300 linear
feet per minute (LFM), 1.5 m/s. This airflow should be evenly distributed across the
board. See Appendix B, “Thermal guidelines for selecting suitable servers for use with
a Dialogic
®
DSI SS7MDL4 Network Interface Board”.