Service manual

C-24 AlphaServer 4000/4100 Service Manual
RCM/Modem Interchange Overview
Table C-4 summarizes the actions between the RCM and the modem from
initialization to hangup.
Table C-4 RCM/Modem Interchange Summary
Action Data to Modem Data from Modem
Initialization command AT&F0EVS0=0S12=50<cr>
Initialization successful 0<cr>
Phone line ringing 2<cr>
RCM answering ATXA<cr>
Modem successfully
connected
1<cr>
Force modem into
command mode
<guard_band>+++
Modem in command
mode
0<cr>
Hangup ATH<cr>
Successful hangup 3<cr>
Modifying Initialization and Answer Strings
The initialization and answer strings are stored in the RCM’s NVRAM. They come
pre-programmed to support a wide selection of modems. In the circumstance where
the default initialization and answer strings do not set the modem into the desired
mode, the following SRM set and show commands are provided to enable the user to
define and examine the initialization and answer strings.
To replace the initialization string:
P00>>> set rcm_init "new_init_string"
To replace the answer string:
P00>>> set rcm_answer "new_answer_string"