Media5 Mediatrix 4104, Reference Manual

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Mediatrix 4104 255
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H A P T E R
17
Bypass Configuration
The Mediatrix 4104 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 4104.

When the IP network is down.
This is indicated by the In Use LED being steady ON (except when the power is removed). If one of these
conditions is met, a phone/fax used on FXS connector 1 is directly connected to the SCN Bypass line. FXS
connector 1 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 163: 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.