Specifications

46
CSU/DSU MS DBU
Table 7-1. DTE Options AT Commands
Front Panel AT Description
Command
DTE Rate
1=2.4K %K3 DTE rate: 2.4K sync and async
2=4.8K %K4 DTE rate: 4.8K sync and async
3=9.6K %K5 DTE rate: 9.6K sync and async
4=19.2K %K6 DTE rate: 19.2K sync and async
5=38.4K %K7 DTE rate: 38.4K sync and async
6=56K/57.6K %K8 DTE rate: 56K sync or 57.6K async
7=SAME AS LOOP %K9 DTE rate matches loop rate
1=SCRAMBLER OFF _F0 DTE data scrambler disabled (64-kbps loop
rate only)
2=SCRAMBLER ON _F1 DTE data scrambler enabled (64-kbps loop
rate only)
3=SUPPRESS LBE _F2 Suppresses loopback-enable code (LBE) in
transmit data from the DTE after 30 bytes in
a row detected (64-kbps loop rate only)
Data Format
1=ASYNCHRONOUS &Q0 Asynchronous DTE operation mode
2=SYNCHRONOUS &Q2 Synchronous DTE operation mode
DTE CMD Option
1=DISABLED none Disables all DTE command modes
2=AT COMMAND SET none Enables AT command mode for DTE
3=V.25 SYNC none Enables V.25 (SDLC) command mode for
DTE
4=V.25 BSC/ASYNC none Enables V.25 (bisync or async) command
mode for DTE
Transmit Clock
1=NORMAL &X0 TX clock from DSU selected
2=EXTERNAL &X1 ETC clock from DTE selected
3=INVERT &X3 Inverted Tx clock from DSU selected
CS Options
1=FORCED ON &R0 CS always on
2=FOLLOWS RS &R1 CS state same as RS state
3=FOLLOWS CD &R2 CS state same as CD state
4=FOLLOWS RS+CD &R3 CS state same as RS and CD state