Zhone Technologies Network Device BRI Card Specifications, Design Standards for Model, Lult Lunt

	Zhone Technologies, Inc.	IMACS Product Book, Version 4
	Table 18—BRI Card Specifications (continued)
B-Channel Mode		None, B1, B2, B1+B2, or 128 kbps
D-subchannel		None, 1, 2, 3 or 4 (used for BRITE mode)
Sealing Current		Off or On per port (Models 826361 and 826171 only)
Design Standards for Models 826070 and 826171
	ANSI T1.601	ISDN Basic Access Interface for Use on Metallic Loops for
		Application on the Network Side of the NT (layer 1
		Specification) 8261, 8263
	ANSI T1.602	ISDN Signaling Specification for Application at the User-
		Network Interface – Layer 2 Specification
	ITU-T I.430	ISDN, Basic User-network Interface - Layer 1 specification
	TR-NWT-000397	ISDN Basic Access Transport System Requirements
	GR-000303	Integrated Digital Loop Carrier System Generic Requirements,
		Objectives and Interface
Design Standards for Model 826270
	ANSI T1.605	ISDN Basic Access Interface for S and T Reference Layer 1
		Specification
	ITU-T I.430	ISDN, Basic User-network Interface, Layer 1 specification
	TR-NWT-000397	ISDN Basic Access Transport System Requirements
	GR-000303	Integrated Digital Loop Carrier System Generic Requirements,
		Objectives and Interface

The following is a summary of the general requirements of the LULT and LUNT as described in the TR-NWT- 000397.

Function	LULT	LUNT	Notes
DSL master transceiver (2-wire U interface)	Yes		ANSI T1.601.1992 & TR-393
DSL slave transceiver (2-wire U interface)		Yes	ANSI T1.601.1992 & TR-393
Sealing current source	Yes
Sealing current termination
DC Test Signature	Yes	Yes	ANSI T1.601-1992
Metallic Test Access	Yes		TR-476
Loop backs	Yes	Yes

6. DSO-DP

The 825460 DSO Data Port/G.703 Data Unit (DSO-DP/G.703) is a plug-in user card for the system. The DSO- DP/G.703 provides a 64 Kbps interface to a DSO of a T1/E1 network. The card supports four (4) ports which provide a 64 Kbps interface to a DSO on a T1 or E1 WAN link. Each DSO-DP/G.703 card can be installed in any User Slot and provides four (4) DB15 female connectors.

The DSO-DP/G.703 card can be programmed to operate in either DSO-DP mode or in G.703 mode. In G.703 mode, the card supports either co-directional or contra-directional operation and this option can be set on a port-by-port basis. In DS0-DP mode, in addition to Transmit Data and Receive Data, the card can be programmed to either provide a 64 Kbps bit clock and an 8 kHz byte clock to the attached device or to receive those two clocks from the attached device.

In G.703 Co-Directional mode, the Transmit Data and Receive Data leads are supported. The clock information and the data make up a composite signal and the clock must be derived from the data stream. In G.703 Contra- Directional mode, the port provides separate Transmit and Receive Clocks to the attached device. Both clocks are 64 Kbps clocks with embedded 8 kHz Bipolar Violations (BPVs) to mark the byte boundaries.

March 2001 Page 61