Port Configuration


The Port Configuration screen displays the current port configuration. The fields are described in the table below.

Click Edit to change the parameters.

Field / Section

Description

Port Configuration

 

AID

Identifier for port A or B.

Enabled

YES or NO indicates if the port is enabled or disabled.

Framing

The selected framing type ESF, D4, CAS, CCS, 2048K.

Compensation

For ESF and D4 select length in feet (133, 266, 399, 533, 655) of the cable connecting the OT-21 to the network element being synchronized. For CAS,CCS, and 2048K select 75 or 120 ohms.

Zero Suppression

Indicates if zero suppression is on or off to suppress or not suppress leading zeros.

CRC

Indicates if CRC checking is on or off. On checks the integrity of a block of transmitted data (CRC Generation is only shown for E1 outputs).

SSM

Indicates if SSM is on or off for reading or ignoring SSM messages.

Bit

Sets the E1 bit position to 4,5,6,7, or 8 (SSM Bit is only shown for E1 outputs).

AIS

Indicates if Alarm Indication Signaling is on or off to receive or not receive codes transmitted downstream in a digital network that shows an upstream failure has been detected and alarmed.

PQL

The Priority Quality Level (PQL) is a Synchronization Status Message (SSM) table which allows for translation between DS1 and E1 SSMs.

OT-21 Graphics/Port/PortConfig.gif