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Multipoint Dial Backup Support – Provides the following enhanced PSTN backup capabilities for the
3920Plus and 3921Plus modems:
Automatic PSTN backup upon loss of APL facility.
Dial and Ring Tone test for the PSTN facility while operating on APL.
Testing of the APL facility before restoration to APL and disconnection from PSTN.
Automatic or manual dial standby.
Change, Clear, and Display call directory command.
Subnetwork Health and Status alarms for dial backup.
Additional VF parameter measurements with corresponding threshold alarms.
NMS support – 6700 and 6800 Series Network Management Systems support the features described above.