ADTRAN BR1 manual Compatibility T400 Edge Connector PIN Assignments, NT1 I/F, Tri I/F, Loopback

■ S1-1 SX

ON

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FOR COMPLETE I&M PRACTICE 877.457.5007

DOCUMENT # 094

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TR ISDN	STATUS LEDs			DEPLOYMENT GUIDELINES
CLEI:DDRPLRC1AA	NT1 I/F	● ON	Indicates a loss of signal from or synchronization	TOTAL REACH SC PAM SIDE
			with the 2B1Q BRI interface towards customer’s	Maximum Loop Loss		46 dB @ 20 kHz using a 135 ohm termination
			NT1.			52 dB @ 28 kHz using a 135 ohm termination
		✷ FLASHING	Once per second indicates receipt of a Near End	Maximum Noise		34 dBrn using a 135 ohm termination with a 50 kB filter
			Block Error from the 2B1Q BRI interface.	Maximum DC Resistance		2000 ohms
	TRI I/F	● ON	Indicates a loss of signal or synchronization with	Maximum Single Bridged Tap		2 kft
			the TRI-C (Total Reach ISDN CO) unit	Maximum Total Bridged Tap		6 kft
		✷ FLASHING	Once per second indicates receipt of a Near End	Maximum # of Bridged Taps		3
			Block Error from the TRI-C unit	Nominal Voltage		-130 VDC from TIP (GND) to RING (-130 v)
	LOOPBACK	● ON	Indicates the TRI-R unit is in a 2B+D loopback	Note: Bridged Tap length must be included as part of the total loop length.
		✷ FLASHING Oncer per second for B1 loopback, twice per second
			for B2 loopback	U-INTERFACE SIDE
	ACT	● ON	Indicates the terminal equipment has exchanged	Maximum Loop Loss		42 dB @ 40 kHz using a 135 ohm termination
			ACT bits with the ISDN switch	Maximum Noise		33 dBrn using a 135 ohm termination with a 50 kB filter
		✷ FLASHING	Once per second indicates that the ACT bit is being	Maximum DC Resistance		1300 ohms
			sent from only the terminal equipment (CPE)	Maximum Single Bridged Tap		3 kft
	OPTIONS			Maximum Total Bridged Tap		6 kft
				Maximum # of Bridged Taps		3
				Voltage	-48 VDC from TIP (GND) to RING (-48 v)

Default and normal condition. Provides between 4 to 10 mA of sealing current toward the customer’s NT1/TA.

OFF Disables sealing current to the customer’s NT1/TA.

■S1-2 TEST

ON	Used for factory test only.
OFF	Default and operational mode.

COMPATIBILITY

T400 EDGE CONNECTOR PIN ASSIGNMENTS

55	TIP, U-Interface
49	RING, U-Interface
47	RING, Total Reach Interface
41	TIP, Total Reach Interface
27	Frame GND
11	Frame GND

Note: ISDN connections are not polarity sensitive