Specifications

Section 360-381-202

6.2 Software Optioning

This unit comes from the factory with default provisioning, which can be changed through the Network Manage-

ment or the craft terminal interface. See the NMS or craft terminal interface documentation for procedures. The

provisioning options are as follows with the default optioning noted:

Option Choices Default

ICB Address (address= 1 + switch setting) Switch settings 00 through 15 00

T1 Frame format Superframe (SF), Extended Superframe (ESF) ESF

Auto detect mode (loop timing only) No, Yes No

Transmit T1 Timing Source External, Internal, Looped Internal

Line Build Out (LBO) 110, 220, 330, 440, 550, 660 FT or

0, 7.5, 15, 22 dB

0-110 FT

T1 Line Code AMI, B8ZS B8ZS

Test Generator (per channel) Tone Test, 1 KHz 0 dBm0, None None

T1 Loopback Selection Line Near End, Line Far End, Payload Far End None

CGA Process Mode Normal, CM2, CM3 Normal

Remote Control Method None, Occupy One Channel, Facility Data Link

(ESF Mode only)

Facility

Data Link

Operation mode Normal T1, Dual T1, Protection T1 Normal T1

Status (Protection mode only) Primary T1, Secondary T1 Primary T1

Error threshold (Protection mode only) 0 − 900 250

7. ALARMS

Alarms provide an audible and visual indication that there is something functioning improperly within the system.

There are three alarm modes, Normal, CM2 and CM3 on the 360-80 shelf. The T1-S will generate an alarm

based on its configuration.

If an alarm occurs, pressing the Audible Alarm Cut-off (ACO) switch stops the audible alert associated with the

alarm. However, it does not clear the alarm. To clear an alarm, the source of the alarm must be identified. Appar-

ent indication of the source will be the unit with the RED alarm displayed. The other units in the network will dis-

play a yellow alarm indicating there is a problem somewhere, but not here.

7.1 Alarm Trunk Processing

When a loss of signal occurs for 1 to 2.5 seconds, depending on the alarm mode used, a red alarm condition is

triggered. The unit where the error occurred will display the red alarm. When using the normal alarm mode and a

red condition is present, the other units in the network will display a yellow alarm. CM2 and CM3 modes do not

transmit a yellow alarm signal during a red alarm condition.

When loss of T1 or a yellow alarm signal is detected in normal mode, CGAI trunk conditioning occurs immediate-

ly. CGAD trunk conditioning occurs 2.5 seconds after the alarm is declared. Individual card provisioning deter-

mines the conditioning state during CGAI and CGAD.

During red alarm conditions in CM2 mode, individual card provisioning determines the conditioning state during

CGAI and CGAD. During red alarm conditions in CM3 mode, trunk conditioning is done to “busy” the circuits and

ignores the CGAI and CGAD card provisioning.

During yellow alarm conditions in CM2 or CM3 modes, no trunk conditioning occurs.

Table 5. Duration of Alarms

Alarm Normal CM2 CM3

T1 loss to Red Alarm declared 2.5 Sec. 1 Sec. 1 Sec.