User`s manual

EAGLE - ANNEX A-5 ISDN BACKUP FACILITY. 70
The EAGLE will monitor v.35 clock signal and will stop ISDN communication and re-start to
restore main v.35 connection five seconds after it detects v35 clock signal is again in the
interface.
 The V.35 connection has the higher priority because the ISDN is used only when the
main connection fails.
 The EAGLE that receives the call has to be configured as automatic off-hook.
 In order to test that backup system works, we recommend to turn off v.35 terminal.
Never disconnect v.35 connector when the equipment is on.
 In case that the test is not succesfully, check the following:
- make sure that both audiocodec work fine when connected in the V.35 line.
- make sure that both audiocodec work fine when connected in the ISDN line.
- make sure that both audiocodec detect the line failure.
- make sure that both audiocodec have the same firmware versions and these accept
the backup facility. Version must be higher than MCU 2.20 / DSP 1.10 / TA 4.09