Specifications

Mediatrix 4100 153
C HAPTER
12
Bypass Configuration
The Mediatrix 4100 may have an optional RJ-11 connector used to connect to a standard SCN line, called
Bypass. It allows its users to maintain telephone services in the event of a power outage or network failure.
Bypass Connector Settings
During normal operation, the SCN line connected to the Bypass connector is switched out of the circuit through
commuting relays. The Bypass connector can be activated by two different conditions:
 When power is removed from the Mediatrix 4100.
 When the IP network is down.
If one of these conditions is met, a phone/fax used on FXS connector 1 (Mediatrix 4108/4116) or analog line
1 (Mediatrix 4124) is directly connected to the SCN Bypass line. FXS connector 1 (Mediatrix 4108/4116) or
analog line 1 (Mediatrix 4124) stays in Bypass connection until:
 The error conditions have been cleared.
 The device connected to it is on-hook and a delay has elapsed.
Standard Bypass
The following describes how to enable/disable the standard Bypass feature.
 To enable the standard Bypass feature:
1. In the fxsMIB, locate the fxsByPassEnable variable.
This option enables/disables the bypass service.
The default value is enable.
Table 110: Bypass Values
Value Description
disable The line with the bypass service is never redirected on the bypass line except
when there is a power failure.
enable When the line with the bypass service is unusable (ifAdminUsageState is idle-
unusable), it is redirected to the bypass line. When this line becomes usable
again (ifAdminUsageState is idle), the redirection is stopped within 10
seconds if the bypass line is unused or 10 seconds after the termination of
the call.
Note: The control of the bypass service is only possible when the unit is powered on. When power is off,
the bypass service is always enabled.