User guide

DS3 Test

252 AXS-200/805/855

DS3 Loopbacks

Loopbacks are not available with Monitor test mode.

Press , select DSn/PDH, DS3, and Loopbacks.

³ Receive: The value displayed, FF

None (All Ones), should be the

value selected in Transmit on

remote unit.

³ Transmit: Select the transmit

loopback code. Choices are FF

None (All Ones), 32 DS3 EQPT

FAIL (SA), 1C DS3 LOS, 00 DS3

Out-Of-Frame, 2C DS3 AIS

Received, 34 DS3 IDLE

Received, 1E DS3 EQPT FAIL (NSA), 3A Common EQPT FAIL, 2A

Multiple DS1 LOS, 0A DS1 EQPT FAIL (SA), 3C Single DS1 LOS, and

06 DS1 EQPT FAIL (NSA). The default setting is FF None (All Ones).

³ DS3 FEAC: is available when Term mode (Term-DSX or Ter m DSX-HI)

and C-bit framing are selected from the setup page. Select the DS3

FEAC code. Choices are None, LINE, NIU, COT, COT-alt2, Repeater,

and RT-alt. The default setting is None.

³ DS1 FEAC: is available when Term mode (Term-DSX or Ter m DSX-HI)

and C-bit framing are selected from the setup page. Select the DS1

FEAC code. Choices are None, ALL, and 1 to 28. The default setting is

None.

³ Local: Select the local loopback type. Choices are None, Self-Loop,

and Local-NW. The default setting is None.

Self-Loop loops the transmitter (TX) of the AXS-200/805/855 to its

receiver (RX).

Local-NW: loops the receiver (RX) of the AXS-200/805/855 to the

transmitter (TX), manual DS1 loopback towards the network.