Specifications

2 Specification
24
2.4.3 Physical Interfaces
The DSI SS7HDE board (SS7HDED4TEQ) supports the following physical interfaces:
• Four T1/E1/J1 digital trunk interfaces. See Section 2.4.3.1 below for more detail.
• One 10/100Base-TX Ethernet interface (RJ-45 port)
• H.100 CT Bus interface. See Section 3.4.1 for details on the correct termination
of the CT Bus.
Note: The 10/100Base-TX Ethernet interface is currently not supported.
2.4.3.1 T1/E1/J1 Digital Trunk Interface Properties
The properties of the T1/E1/J1 digital trunk interfaces are described as follows:
• Standard
Four interfaces each software configurable as either T1 or E1
• Pulse mask
— T1: TIA-968-A, CS-03, and AT&T TR62411
— E1: ITU-T G.703
• Data rate
— T1: 1544 kbits/s ± 50 ppm
— E1: 2048 kbits/s ± 50 ppm
• Frame format
— T1: D4, ESF, and ESF-CRC6
— E1: E1 and E1-CRC4
• Line codes
— HDB3, AMI (ZCS), AMI, B8ZS
• Connector type
— RJ-45
2.4.4 Protocol Resource Support
When used in a signaling node, the DSI SS7HDE board (SS7HDED4TEQ) supports the
Message Transfer Part (MTP) running on the board (with support for up to 64 links or
two HSL links) and optionally other protocols including ISUP, TUP, SCCP, TCAP, MAP,
INAP and IS41 running on the board or the host. The protocols are enabled by license
buttons that are specific to SS7HD boards and are engraved with the codes BC, BD, BE
and BF. See Section 2.5, “License Buttons” on page 27.
The DSI SS7HDE 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. For more information on link
monitoring, see Section 3.3, “Monitoring” on page 33.
It is possible to use monitor and receive-transmit protocol operations concurrently on
the same signaling board.