ADTRAN PSD 239 H2R manual Loopback and Control Codes, Enhanced PSD

239 H2R

	ENHANCED PSD 239 H2R	JOBAID
		61221045L2-22A
		0111
STATUS LEDs	LOOPBACK AND CONTROL CODES

CLEI: T1R6VJWD_ _

DSL NET ● Off	No synchronization with the H2TU-C
● Solid Green	Synchronized with an SNR margin greater than the user defined SNR
	Margin Alarm Threshold
✷ Fast Blinking	(Blinking 3 times per second) Attempting to synchronize with the
Green	H2TU-C

✷Slow Blinking (Blinking 1 time per second) Synchronized with an SNR margin greater

Green	than the user defined SNR Margin Alarm Threshold and the pulse
	attenuation is greater than the user defined Loop Attenuation Alarm
	Threshold
● Solid Yellow	Synchronized with an SNR margin greater than 0 dB but less than the user
	defined SNR Margin Alarm Threshold

✷Slow Blinking Synchronized with an SNR margin greater than 0 dB but less than the user Yellow (1/sec) defined SNR Margin Alarm Threshold and the pulse attenuation is greater

than the user defined Loop Attenuation Alarm Threshold

FUNCTION	CODE	RESPONSE
ARM (in-band)	11000 (binary)	H2TU-C and H2R will arm and the H2TU-R will loop-up toward the network
ARM (ESF Data Link)	FF48 (hex) or 1111 1111
	0100 1000 (binary) sent	H2TU-C and H2R will arm and the H2TU-R will loop-up toward the network
	in the Facility Data Link	H2TU-R will only loop if the NIU option is enabled
Disarm (in-band)	11100 (binary)	All units are removed from the armed state and loopbacks will be released
Disarm (ESF Data Link)	FF24 (hex) or 1111 1111
	0010 0100 (binary) sent in	All units are removed from the armed state and loopbacks will be released
	the Facility Data Link
H2TU-C Network Loop-Up1	D3D3 (hex) or	If received while in an armed state, the H2TU-C will loop toward the network,
	1101 0011 1101 0011	transmit 2 seconds of AIS(all 1s) followed by 5 seconds of loop code (D3 hex)
	(binary)	and then 231 logic errors will be injected toward the network. The logic errors
		will continue to be sent in 231 bit error bursts every 20 seconds as long as the
		pattern continues to be detected by the H2TU-C. When the pattern is removed,
		the unit will remain in loopback.
Loopdown w/out	9393 (hex) or	Automatically releases without disarming any H2TU-C and H2R that may be in
disarming2	1001 0011 1001 0011 (binary) loopback toward the network.

	● Solid Red	Synchronized with an SNR margin of 0 dB
	✷ Slow Blinking	(Blinking 1 time per second) Synchronized with an SNR margin of 0 dB
	Red	and the pulse attenuation is greater than the user defined Loop
		Attenuation Alarm Threshold
DSL CUST ● Off		No synchronization with the H2TU-R
	● Solid Green	Synchronized with an SNR margin greater than the user defined SNR
		Margin Alarm Threshold
	✷ Fast Blinking	(Blinking 3 times per second) Attempting to synchronize with the
	Green	H2TU-R
	✷ Slow Blinking	(Blinking 1 time per second) Synchronized with an SNR margin greater
	Green	than the user defined SNR Margin Alarm Threshold and the pulse attenu
		ation is greater than the user defined Loop Attenuation Alarm Threshold
	● Solid Yellow	Synchronized with an SNR margin greater than 0 dB but less than the user
		defined SNR Margin Alarm Threshold
	✷ Slow Blinking	Synchronized with an SNR margin greater than 0 dB but less than the user
	Yellow (1/sec) defined SNR Margin Alarm Threshold and the pulse attenuation is greater
		than the user defined Loop Attenuation Alarm Threshold
	● Solid Red	Synchronized with an SNR margin of 0 dB
	✷ Slow Blinking	(Blinking 1 time per second) Synchronized with an SNR margin of 0 dB
	Red	and the pulse attenuation is greater than the user defined Loop
		Attenuation Alarm Threshold
LL/RL	● Green	Indicates a loopback at the H2R toward the H2TU-R is active
	● Yellow	Indicates a loopback at the H2R toward the H2TU-C is active

Loopback Query1	D5D5 (hex) or	Allows one to query the devices at any given time to determine whether any
	1101 0101 1101 0101 (binary) units are in loopback. If D5 hex is received while in a loopback state, the unit in
		question will transmit the logic error count toward the network using the same
		methodology as identified in each of the loop-up descriptions (231 BE = H2TU-C,
		10 BE = H2R1, 200 BE = H2R2 and 20 BE = H2TU-R).
Query Loop Parameters	DBDB	If the units are armed, and the H2TU-C is in network loopback, errors are
	(1101 1011 1101 1011)	injected into the DSX-1 signal upon detection of the query loop parameters
		pattern. As long as a pattern continues to be sent, errors are injected again
		every 20 seconds. The number of errors injected each time depends on the
		current status of signal quality and pulse attenuation parameters on each
		loop. 111 errors are injected if all HDSL receiver [points (H2TU-C LP1/LP2,
		H2R #1 NET LP1/LP2, H2R #1 CST LP1/LP2, H2R #2 NET LP1/LP2, H2R #2 CST
		LP1/LP2, and H2TU-R LP1/LP2) indicate pulse attenuation is 30 dB or lower and
		signal quality (margin) is 6 dB or higher. 11 errors at a time are injected if any
		of the 12 receiver points indicate pulse attenuation is greater than 30 dB
		and/or signal quality (margin) is less than 6 dB.
Loopback Time-Out	D5D6 (hex) or	If received during the armed state and prior to loopback initiation, the loopback
Override1, 3	1101 0101 1101 0110	timeout override feature will automatically disable loopback timeout, i.e., the
	(binary)	loopback will not timeout after the 120 minute default period. As long as the
		units remain armed, the timeout will remain disabled. When the units are
		disarmed, the loopback timeout will once again return to the default value.
Span Power Disable1, 3	6767 (hex) or	If received during an armed state (must not be in loopback), the H2TU-C will remove
	0110 0111 0110 0111 (binary)	span power toward the line. As long as the pattern is received, the span power will
		remain disabled. Once the pattern is no longer received, the H2TU-C will reactivate
		span power. All units will then re-train and return to the disarmed state.
H2R1 Network Loop-up1	C741	If an H2R is present and units armed, the H2R will loop up toward network, 2
	(1100 0111 0100 0001)	seconds of AIS (all 1s) will be sent, 5 seconds of data will pass, and then 10 bit
		errors will be injected into the DSX-1 signal. As long as the pattern continues to
		be sent, 10 errors will be injected every 20 seconds. When the pattern is
		removed, the unit will remain in loopback. If the pattern is reinstated, the
		injection of 10 bit errors will resume at 20-second intervals.
H2TU-R Loop-up1	C742	ESF facility Datalink: ESF only; when sent from the network, an H2TU-R
	(1100 0111 0100 0010)	network loopback is activated and a 20-bit error confirmation is sent. When

C A U T I O N !

SUBJECT TO ELECTROSTATIC DAMAGE

OR DECREASE IN RELIABILITY.

ENHANCED PSD

The Enhanced PSD 239 H2R , P/N 1221045L2, must be used in conjunction with the Enhanced PSD T200 H2TU-R, P/N 1222026L9. This H2R will not function with any other H2TU-Rs. The Enhanced PSD T200 H2TU-R will function with all versions of the ADTRAN H2R, but the enhanced spectral performance will only be achieved using the Enhanced PSD 239 H2R.

CARD EDGE PIN ASSIGNMENTS

1	GND
	NC
2
3	CUSTOMER
4		SIDE 1
5	NETWORK
6
7	NC
8
	NETWORK
9		SIDE 2
01	GND
		BYPASS
11	CUSTOMER
2
1

sent from the customer, an H2TU-R customer loopback is activated with a

20-bit error confirmation.

1Units must be armed with 11000b or FF48h before this code will work.

2In order to behave like an NIU, the H2TU-R will not loop down from the network side with 9393h.

3This code will be detected only if the units are armed AND there are NO loopbacks active.

NOTE: All codes listed above must be sent for a minimum of 5 seconds in order for them to be detected and acted upon.

*If NIU is enabled, then the H2TU-R can be in network loopback when the H2TU-C or H2R loop-up codes are sent.

HANDLING PRECAUTIONS REQUIRED.

■ For a complete Installation and Maintenance Practice faxback: (877) 457-5007, Document # 742. Please have your fax number available. ■