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7 serial port (com2), 8 alarm outputs, 9 controls and indicators – Dialogic SS7G21 User Manual

Page 17: Serial port (com2), Alarm outputs, Controls and indicators

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17

Dialogic

®

SS7G21 and SS7G22 Signaling Servers Hardware Manual Issue 7

3.7

Serial Port (COM2)

The serial interface port specification is described as follows:

Quantity:
One; mounted on the rear of the chassis.

Connector:
RJ45.

Electrical:
RS232.

Signals:
TXD, RXD, DSR, DTR, GND.

3.8

Alarm Outputs

The alarm outputs specification is described as follows:

Type:
Each alarm (Major, Minor, Critical and *Power) is the output of a SPDT relay contact.

Designation:
Major, Minor, Critical and Power.

Contacts:
Single, break before make changeover, voltage free. A common contact with normally open and

normally closed connections is provided.

*Power alarm has just a common and normally open contact outputs.

Contact rating:
60 VDC maximum.

Connector type:
15-way, DB15 male connector.

A full list of all alarm types is given in the appropriate SS7G2x User Manual.

Section 2.10, “Related Information” on page 13

lists the various user manuals.

3.9

Controls and Indicators

The SS7G21 and SS7G22 include the following switches and indicators. See

Figure 3 on page 32

and

Figure 4 on page 33

for the location of the controls and indicators on the front panel and back panels.

Front Panel

Switch

Toggles the unit power

Switch

Resets the unit

CRT Alarm LED (amber)
When lit continuously, indicates the presence of a critical fault. A critical fault is an error or event that is

detected by the unit and indicates failure of an important subsystem that critically degrades operation of

the unit. Some critical faults may indicate an error or event that either has, or may lead to, a fatal failure

of the unit and urgent action should be taken to resolve the cause of the fault. An example is an over

temperature condition due to the failure of the cooling system or the failure of an SS7 Signaling Board.

The critical alarm relay is engaged. The full list of critical alarms is given in the appropriate SS7G2x

User Manual.

Section 2.10, “Related Information” on page 13

lists the various user

manuals.

MJR Alarm LED (amber)
When lit continuously, indicates the presence of a major fault. A major fault is an error or event that is

detected by the unit that has a discernible impact on the unit’s operation. In this case, the unit can

continue to operate, but in a “degraded” fashion (that is, with reduced performance or non-fatal loss of

features). Prompt action should be taken to resolve the cause of a Major fault. An example is a Remote

Alarm Indication (RAI) on one of the PCM trunks. The major alarm relay is engaged. The full list of major

This manual is related to the following products: