Tx1s If the remote Model 2701RC responds to the local Model 2701RCs terminate loopback request, the local unit then sends an all ones pattern before returning to the Idle state

TxP The Model 2701RC is sending a test pattern while in Test Mode

IdlP The Model 2701RC is sending a test pattern in place of data. The Model 2701RC is not in test mode.

The Model 2701RC receiving a RL can be in one of the following states:

RxPr The Model 2701RC is receiving a preparatory pattern.

Sack The Model 2701RC, upon receiving a preparatory pat- tern, sends an acknowledgement message.

RL The Model 2701RC is in remote loopback mode.

RxTr The Model 2701RC is receiving a terminate loopback message.

WE1s The Model 2701RC is waiting for a sequence of all ones and will time out if it does not receive it.

IdleP The Model 2701RC is sending a QRSS, 511 or 2047 pat- tern.

Off The Model 2701RC is in local loopback.

cRDL Type: V.54 (default)

Options: V.54 or CSU

The user can set this switch to select the type of remote loop that will be initiated by the Model 2701. If set to V.54, the Model 2701 will initiate a V.54 loop when Remote Loop is selected by the front panel switches. If set to CSU, the Model 2701 will initiate a CSU loop when Remote Loop is selected by the front panel switches.

S2-3

RDL Type

Off

Initiate a V.54 RDL loop when selected

On

Initiate a CSU loopback when selected

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dTest Pattern Idle (default) Options: Idle or Sending

To send a pattern, press the ‘c’ key and press <spacebar> to send the test pattern. The “OK” message indicates the received test pattern is error-free. The “BE” message indicates errors in the received pattern. You may also hear a beep (from your termainal) once a second as long as the unit detects a bit error in the pattern.

Idle Indicates that Model 2701RC is not sending a pattern.

Sending

Indicates that Model 2701RC is sending a pattern.

eError Insertion Off (default) Options: On, Off

You may inject intentional errors into the test pattern by turning Error Insertion ON. The Error (ERR) LED will blink once per second.

fSelected Pattern

Options: QRSS, 511, or 2047

Use this option to select the test pattern used to test the link.

NI STATUS

The Network interface (NI) status is shown in the middle of the Diagnostics/Statistics screen. The brackets

are empty when the link is operating normal- ly. Only one error message is provided.

Receiver Carrier Loss [RCL] occurs when 255 consecutive zeros have been detected at the network interface. RCL clears when a pulse is detected.

Current DIP Switch Settings

The Switch settings are displayed here to facilitate troubleshooting your unit without opening up the unit first.

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