XtendLan XL-GDB series User’s Guide
2.5 Interface Configuration
Parameters can be changed by using CID. When using a terminal, the parameters are
selected from the Configuration menu.
2.6 Interface Type
The XL-GDB is configured as DCE and is provided with a female connector for V.35, EIA-530,
RS-449 and X.21 interfaces. Appendix A lists each of the signals, pin numbers, and their relative
direction for the different interfaces. G.703 (E1) and T1 interfaces are available.
2.7 Alarm management
The XL-GDB includes alarm to alert you of problem conditions on both the DSL transmission
facility and the data interface. On the DSL line, loss of Sync will activate an alarm, independent of
the access interfaces.
Loss of Sync:
This alarm indicates that the facility cannot transmit data until the XL-GDB can
re-synchronize itself. This is always considered an alarm. The alarm indication is shown as a local
and a remote sync loss. On the G.703 and T1 interfaces, numerous alarm conditions will be
reported if they are present:
1. Loss of Frame (LOF)
2. BPV Detected
3. RAI/YEL: Remote alarm indicator/Yellow alarm
4. AIS: Alarm indication signal
5. CRC Error
6. LOS: Loss of signal
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