DESC: The V.34 DBU Module provides switched backup of the leased line application. This module allows backup data rates of up to 33.6Kbps over the public switched telephone network (PSTN).??PRODUCT FEATURES:??Provides V.34 modem dial backup rates up to 33.6 Kbps via RJ-45 analog POTS line; ?Provides dial backup for public Frame Relay networks; ?Re-establishes physical layer and Frame Relay signaling in the event of primary link failure, loss of LMI, or loss of PVC Network restoral independent of router; ?Existing IQ 710 units are filed upgradeable to support dial backup using an IQ 710 Series dial backup module.