Cellular Communications
D-5
Issue 2 May 1995
Connecting with
Non-ETC Modems
For best operation, it is recommended that the land-line modem
also support the ETC protocol. When this is not possible,
adequate operation can usually be obtained. The following
describes changes to both the cellular site and land-line
modems that can improve modem performance.
G
If the remote land-line modem is not an ETC modem, but
it does support either
the V.32bis or V.32 protocols, then
configure the mobile site modem to operate at 4800 bps
by using the %B4800 command.
G
If the remote land-line modem is not an ETC modem, but
it does support the
V.22bis protocol, then configure the
mobile site modem to operate at 1200 bps by using the
%B1200 command.
G
If possible, make sure that the remote land-line modem
is at least set up with \N6 to connect using V.42 LAPM,
MNP, or disconnect. Better performance can be achieved
if the modem is configured for \N4 (V.42 LAPM only
mode).
G
For both the cellular site and land-line modems, set the
No Carrier Disconnect Timer to 10 seconds. For this
modem (and most others), the command is ATS10=100.
