Enterasys Networks XSR-3150 manual T1/E1 Drop & Insert D&I NIM, Figure A-25 T1/E1 D&I NIM Card

Cable, CompactFlash and Accessory Specifications

T1/E1 Drop & Insert (D&I) NIM

The XSR’s 2-port T1/E1 D&I NIM card, as shown in Figure A-25, is designed as an intermediary between the Central Office T1/E1 line and a PBX. It de-couples Channel Associated Signaling (CAS) and Voice DS0 timeslots and redirects them to a PBX, and conversely, reintegrates Voice DS0 timeslots from the PBX with the T1/E1 data stream. Both ports are functionally equivalent.

Figure A-25 T1/E1 D&I NIM Card

The T1/E1 D&I NIM provides long- and short-haul capabilities and Drop and Insert functionality via a fully configurable Time Division Multiplexed (TDM) switch. It can be configured for data only, or voice/data applications. In Data-Only mode, both ports pass data, whereas in Voice/Data mode, one port passes a voice/data stream, while the other passes only voice.

The T1/E1 D&I NIM maintains high reliability of voice traffic by using a bypass relay to ensure continued service even if a power failure occurs or the NIM enters an abnormal state. In such an event, the two ports are connected, bypassing the NIM, thus allowing uninterrupted bidirectional voice transmission. To ensure service, remember to configure voice timeslots on both sides of the connection in the same manner. That is, if timeslots 3-5 are configued for voice on the NIM, the same DS0s should be configured for voice at the Central Office. Refer to the XSR User’s Guide for instructions.

Refer to Figure A-26for pinout assignments.

	Figure A-26 T1/E1 D&I NIM Pinouts
			Pin	Signal
	T1/E1 D&I
			1	Unused
			2	Unused
			3	Unused
			4	Signal (Tip)
		Pin 1	5	Signal (Ring)
Pin 8
			6	Unused
			7	Unused
			8	Unused

Regulatory/Safety Compliance

The T1/E1 D&I NIM complies with the following regulatory requirements: PCI Local Bus Specification Rev 2.1, IEEE P1386 Draft 2.4, IEEE P1386.1 Draft 2.4, ANSI T1.403, ITU-T G.703, G.704, G.706, G.736, G.775, G.823, I.431, Q.703, AT&T TR62411, TR54016, ETSI ETS 300233, and IEEE 1149.1.

The T1/E1 D&I NIM also complies with the following safety requirements: FCC Part 68, CS03, FCC Class B, TBR12, 13, 14, GR-1089, ITU K17-K20, IEC 61000-4-2, IEC 61000-4-5, UL1950, IEC 950, and EN 60950.

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