Zhone Technologies Network Device manual Delay Specification

Zhone Technologies, Inc.		IMACS Product Book, Version 4
		(toward user) and Tandem (toward CO)
	E&M Sensor Characteristics	2-wire (810860) and 4-wire (811960), Impedance > 15K ohms,
		Sensitivity > 2.5 mA
	Nominal Transmit TLP	Software configurable, -16.5dB to +7.3dB, steps of 0.1dB (2-wire); -
		17.5 dB +14.5dB, steps of 0.1 dB (4-wire)
	Nominal Receive TLP	Software configurable, -16.3dB to +7.5dB, steps of 0.1dB (2-wire); -
		16.3dB +7.5dB steps of 0.1dB
	Termination Impedance	600 Ohms with 2.16 uF capacitor in series (2-wire); 600 Ohms (4-wire)
	Delay Specification
	Absolute Group Delay	<600 us (2-wire and 4-wire)
	(dependent on codec)
	Peak to Average Ratio (PAR)	94 to 97 (2-wire and 4-wire)
	Standards Conformance
	AT&T TR43801	Digital Channel Bank Requirements and Objectives – November 1982
	Bell CoreTR-NWT-000057	Functional Criteria for Digital Loop Carrier System – January 1993
	BellCore GR-63 CORE	Network Equipment-Building System (NEBS) Requirements: Physical
		Protection
	ITU-T G.712	(11/96) – Transmission Performance Characteristics of Pulse Code
	ITU-T Q.552	Modulation (replaces G.712, G.713, G.714 and G.715)
		Transmission Characteristics of 2 –wire analog interface of a Digital
	ITU-T Q.553	Exchange
		Transmission Characteristics of 4 –wire analog interface of a Digital
		Exchange
	FCC Part 68	Requirements for Connection of Terminal Equipment Systems and
		Protective Apparatus to the Telephone Network
	FCC Part 15	Subpart B
	UL 1459	Standard for Safety, Telephone Equipment
	UL 1950	UL Standard for Safety of Information Technology Equipment
	CE EN 500 81-1	Electromagnetic compatibility generic emission standard Part 1
		Residential, commercial and light industry
	CE EN 500 82-1	Electromagnetic compatibility generic immunity standard Part 1
		Residential, commercial and light industry
	CE EN 60 950/A2	Safety of information technology equipment including electrical
		business equipment

March 2001 Page 36