ADTRAN XR Network Card User Manual


 
Chapter 3. Installing an Analog Modem
36 Express XR/XRT Quick Start Guide 61200.153L1-13
Terminal Emulation Modem Disable
When using HyperACCESS or other terminal emulation package
issue the AT command AT_L0 (followed by Enter). Figure 3-6
illustrates a HyperACCESS session disabling an external analog
modem.
Figure 3-6
HyperACCESS: Disabling an External Analog Modem
If carrier detect (CD) is active (a call is connected) on the external
analog modem when attempting to disable it, the Express XRT will not
switch control from the modem port. The call must be hung-up
(disconnected) to deactivate CD.