ADTRAN Express XRT - Manual (Page 49)

Chapter 3. Installing an Analog Modem
61202.153L3-1 Express XRT User Guide 35
Terminal Emulation Modem Disable
When using HyperACCESS or other terminal emulation packag-
es, 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.
INTERNAL ANALOG MODEM APPLICATION
In order to connect an internal analog modem to the Express XRT,
the following items are necessary:
• Internal analog modem
• RJ-11 to RJ-11 telephone cable
Figure 3-7 on page 36 shows how to connect an internal modem to
the Express XRT.