ADTRAN HDSL4 Installation And Maintenance Manual page 22

Provisioning
Provisioning Option
14.Remote Provisioning
15.Shelf Alarm
5
1. External is used only for Kentrox shelves. Unit transmits 12-volt p-p to DSX panel. If using a shelf other than
Kentrox, use the 0-133 feet setting.
2. The forced frame format conversion (FFFC) mode sets the H4TU-C to ESF and the H4TU-R to SF. This mode
should be used to force SF (DS1 from customer) to ESF (DSX-1 to network) conversion in the absence of net-
work-provided ESF framing.
3. Latching Loopback Mode
• T1 - When optioned for T1 mode, the unit does not respond to DDS Latching Loopback codes.
• FT1 - DDS Latching Loopback operation is supported. The H4TU-C and any H4R 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 sends 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. The Shelf Alarm option is available on the DDM+ H4TU-C (P/N 1223403L2),
3192M H4TU-C (P/N 1223404L12) and 3192 H4TU-C (P/N 1223404L2) only.
The Span Power option is available on H4TU-C units only.
The Shelf Alarm option is available on DDM+, 3192M, and 3192
H4TU-C units only.
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HDSL4 for General Distribution Installation and Maintenance Practice
Table 6. Provisioning Options (Continued)
Option Settings
Disabled, Enabled
Disabled, Enabled
NOTE
NOTE
Default Settings
Enabled
Enabled
61223HDSL4L2-5C