HDSL2 for General Distribution Installation and Maintenance Practice Provisioning
61223HDSL2L2-5B 11
Table 6. Provisioning Options
Provisioning Option Option Settings Default Settings
1. DSX-1 Line Build Out
1
0-133 feet, 133-266 feet,
266-399 feet, 399-533 feet,
533-655 feet, EXTERNAL
0 to 133 feet
2. DSX-1/DS1 Line Code B8ZS, AMI B8ZS
3. DSX-1/DS1 Framing SF, ESF, Unframed, Auto ESF
4. Force Frame Conversion Disabled, Enabled Disabled
5. Smartjack Loopback Disabled, Enabled Enabled
6. Loopback Time Out None, 120 Min 120 Minutes
7. Latching Loopback Mode
2
T1 (Disabled), FT1 (Enabled) T1 (Disabled)
8. DS1 Tx Level 0 dB, –7.5 dB, –15 dB 0 dB
9. Span Power Enabled, Disabled Enabled
10. Customer Loss Indicator
3
AIS, Loopback, AIS/CI AIS/CI
11. Performance Reporting Messages None, SPRM, NPRM, AUTO (both) AUTO
12. Loop Attenuation Alarm Threshold 0 (Disabled), 1-99 dB 30 dB
13. SNR Margin Alarm Threshold 0 (Disabled), 1-15 dB 04 dB
14. Remote Provisioning Disabled, Enabled Enabled
15. Shelf Alarm
4
Disabled, Enabled Enabled
2. External is used only for Kentrox shelves. Unit transmits 12-volt p-p to DSX panel.
3. Latching Loopback Mode
• T1 - When optioned for T1 mode, the unit does not respond to DDS Latching Loopback codes.
• FT1 (Fractional T1) - DDS Latching Loopback operation is supported. The H2TU-C units which are in the
HDSL circuit are treated as Identical Tandem Data ports and the HTU-R is treated as a different Tandem
Data port.
Note: When operating in FT1 mode and during periods of T1 loss of signal, LOS, or T1 AIS from the customer
CI, the HDSL system will send in the network direction from the HTU-C a Fractional DS1 idle signal
consisting of a repeating 7E (HEX) byte payload within a framed/unframed T1 signal. In addition,
when optioned for FT1 mode, the setting for Customer Loss Response is ignored.
4. Customer Loss Indicator
• AIS - Send AIS to network upon T1 loss of signal or T1 AIS from customer.
• LPBK - HTU-R initiates a network loopback upon T1 loss of signal or T1 AIS from customer.
• AIS/CI - HTU-R sends customer disconnect indication upon loss of signal, loss of synchronization, or receipt
of T1 AIS from customer.
Note: The CI is generated by transmitting the framing received from the network while overwriting the
payload with a repeating pattern. For applications where the DS1 is Extended Superframe, the data
link is overwritten with a Yellow Alarm that is interrupted once every second by a 100 milli-second
code burst of 7E (HEX).
5. Shelf Alarm is on the DDM+, 3192M, and 3192 Units only.
