PRBi-E3 and PRBi-T3 are intelligent probes located at the customer premises that act as termination points for E3 and T3 public services.PRBi-E3 and PRBi-T3 are designed to detect faulty conditions on the network or user side, sending alerts when such conditions occur and enabling fault isolation.There are three different ways to manage and operate the PRBi-E3 and PRBi-T3:- locally or remotely, using SNMP- locally, using an ASCII terminal. The product includes terminal operation software, which uses menu dialogs with numbered options to be selected by the user.- remote in-band activation of diagnostic loops is available for PRBi-T3 using FEAC codes.PRBi-E3 and PRBi-T3 are transparent to E3, T3 and HSSI framing. The units comply with all relevant international standards, including G.703, SNMP MIB II and DS3-MIB-05.TXT.PRBi-E3 and PRBi-T3 can be managed via RADview, RAD's SNMP management application, which manages all of RAD's manageable products. RADview has a user- friendly GUI and can be run in both UNIX and PC environments in parallel to other vendors.management applications using the same platform.PRBi-E3 and PRBi-T3 enable different clock modes to allow a variety of applications. The following clock modes are supported:- internal clock: a built-in oscillator enables the units to supply the clock- loopback timing: the units transmit and receive data according to the system clock received from the network- transparent mode: the units are divided into two independent clock routes, one from the network to the user and the other from the user to the networkA dry contact relay port is included. The port enables activation of external alarm devices, such as buzzers or alarm lamps. Major and minor alarm conditions are supported.The compact, standalone units are 1U high, designed for the desktop or mounting in a 19" rack. 
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