NETGEAR XM128 ISDN Appendix D Status Registers and Result Codes, Viewing and Setting S-Registers

Appendix D

Status Registers and Result Codes

This appendix describes the purpose and application of status registers and result codes for the Model XM128 ISDN Digital Modem.

Status registers (S-registers) contain values that determine and reflect how your Model XM128 modem operates and executes commands. You can read the values and change them by using either terminal commands or the panel controls with the same results.

Every user profile corresponds to a separate set of S-register values, but when S-registers are mentioned in this guide, the reference is to those that correspond to the active profile. If you want to read or change the values in a profile that is currently inactive, you must first recall that profile to make it active.

S0 to S11 are standard AT S-registers, and S12 to S124 are mostly bitmap configured. Changes in the bitmap configuration can have the same effect as issuing AT commands. However, NETGEAR recommends that you use equivalent AT commands.

Viewing and Setting S-Registers

Several AT commands are used to view the values stored in the S-registers. To view S-registers, follow these steps:

1.Type the AT command ATSr? to display the values stored in S-registers.

The S-register values may be displayed in either decimal or hexadecimal format when using the commands. Bit 3 of S-register 84 sets the numbering system to be used for display:

•ATS84.3=0 for decimal format.

•ATS84.3=0 for hexidecimal format.

Status Registers and Result Codes D-1