Instruction manual

ATLAS 800 Series System Manual Quad E1/PRA Option Module

Configuration

Write security:5; Read security: 5

All of the following configurable parameters apply whether the port is connected to a Primary Rate Access

circuit or a channelized E1 circuit.

Prt Displays the port number.

Name Accepts any alpha-numeric name up to 15 characters long, to uniquely identify

each port on the Quad E1/PRA Option Module.

FAS2 If enabled, resync if FAS or bit 2 of non-FAS frame is received in error three

consecutive times. If disabled, rSesync if FAS is received in error three

consecutive times.

TS16 MF Must be enabled for CAS (common associated signaling) to be used. If disabled,

CCS (common channel signaling) is used.

CRC-4 Transmits the CRC-4 checksum bits in the outgoing E1 data stream, when

enabled. Also, checks the received signal for errors.

Auto Alarm Transmits a remote alarm when framing is lost (when Red Alarm Generation is

on), and transmits an AIS alarm when all ones are received (when RCM AIS

Generation is on).

Code Allows selection of line coding. HDB3 is normally the only coding method used

on public networks. AMI may be selected for testing purposes.

TS0 Spare TS0 bits Sa4 through Sa8 in frames not containing the Frame Alignment Signal

may be used in specific applications, but should be set to 1s when crossing an

international border. Enter decimal number whose 5 LSB are to be used for all

Sa4.Sa8 bits. Refer to CCITT G.704 for more information.

TS16 Spare TS16 in CAS frame 0 contains 3 spare bits: 0000XYXX where ‘X’ marks a

spare bit and ‘Y’ marks an alarm indications to the remote end. Enter a decimal

number whose masked 4 LSB are inserted into TS0 in CAS frame 0. Refer to

CCITT G.704 for more information.

Intl Bit Bit 0 in all non-CRC4 frames are reserved for international use. They may be

used nationally if the path does not cross an international border. If not

specifically used, the bits should be set to ‘1’ on paths crossing a border. Enter

the international bit value of 0 or 1. Refer to CCITT G.704 for more

information.