ADTRAN 1000 239 HRE Brochure

239 HRE
LED STATUS
CLEI: VAR1FC0B_ _
NETWORK
LP1 / LP2
CUSTOMER
LP1 / LP2
LL / RL
HDSL LOOP SPECIFICATIONS FOR OPTIMUM OPERATION
Cable pairs must be nonloaded
No single Bridged Tap > 2 kft
Maximum loop resistance is 800
Pulse attenuation (LOSS on HDSL Current System Status screen) < 30 dB
Impulse noise < 50 dBrn as measured using a 50 kb filter
Total Bridged Tap < 2.5 kft
196 KHz insertion loss < 35 dB
Signal quality of 6 dB or higher, with no fluctuation and equal on both loops
Wideband Noise < 31 dBrn as measured using a 50 kb filter
Internal Clock Accuracy +25 ppm (exceeds Stratum 4)
C A U T I O N C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
TOTAL ACCESS
OFF No synchronization with the ICOT.
GREEN Synchronized with good signal quality on NET Loop 1/Loop 2
(> 2 dB margin).
YELLOW Synchronized with marginal signal quality on NET Loop 1/Loop 2
(1 to 2 dB margin).
RED Synchronized with poor signal quality on NET Loop 1/Loop 2
(0 dB margin).
OFF No synchronization with the RT.
GREEN Synchronized with good signal quality on CUST Loop 1/Loop 2
(> 2 dB margin).
YELLOW Synchronized with marginal signal quality on CUST Loop 1/Loop 2
(1 to 2 dB margin).
RED Synchronized with poor signal quality on CUST Loop 1/Loop 2
(0 dB margin).
OFF No active arming or loopback is detected at the HRE.
YELLOW Indicates LB from HRE toward the network is active.
GREEN Indicates LB from HRE toward the customer is active.
For a complete Installation and Maintenance Practice (P/N 61179513L1-5): (877) 457-5007, Faxback Document 900. Please have your fax number ready.
®
1000 239 HRE
LOOPBACK AND CONTROL CODES
FUNCTION CODE
ARM (in-band) 11000 (binary)
ARM (ESF Data Link) FF48 (hex) or 1111 1111
0100 1000 (binary) sent
in the Facility Data Link
Disarm (in-band) 11100 (binary)
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
Activation ICOT 1 D3D3 (hex) or
1101 0011 1101 0011
(binary)
Loop down w/out 9393 (hex) or
disarming 2 1001 0011 1001 0011 (binary) loopback toward the network.
HRE Network Loop up 1 C741
(1100 0111 0100 0001)
HLIU Loop up 1 C742
(1100 0111 0100 0010)
1 Units must be armed with 11000b or FF48h before this code will work.
2 In order to behave like an NIU, the HLIU will not loop down from the network side with 9393h.
NOTE: All codes listed above must be sent for a minimum of 5 seconds in order for them to be detected and acted upon.
Card Edge Pin Assignment
Pin Designation
1 GND
2 NC
3 T1
4 R1
5 T1
6 R1
7 NC
8 T
9 R
10 GND
11 T
12 R
RESPONSE
ICOT and HRE(s) will arm and the HLIU will loop up toward the network.
ICOT and HRE(s) will arm and the HLIU will loop up toward the network.
All units are removed from the armed state and loopbacks will be released.
If received while in an armed state, the ICOT will loop toward the network.
Automatically releases without disarming any ICOT and HRE that may be in
If an HRE is present and units armed, the HRE will loop up toward network..
If received while in an armed state, the HLIU will loop toward the network..
Description
Ground
No Connect
Customer Loop 1 Tip
Customer Loop 1 Ring
Network Loop 1 Tip
Network Loop 1 Ring
No Connect
Network Loop 2 Tip
Network Loop 2 Ring
Ground
Customer Loop 2 Tip
Customer Loop 2 Ring
JOB
A
ID
61179513L1-22A
0212