Non-Etc Modems; Placing A Call Through A Public Switched Telephone Network (Pstn) - Paradyne KeepInTouch 3760 User Manual

Table D-3. &F6 Cellular Setup Configuration Parameters
Configuration Option
Error Control Mode
Transmit Level
(in North America only)
No Answer Time-out
No Carrier Disconnect
V.32 bis Train
V.42 ARQ Window Size Window size of 15
Cellular Enhancements Enable
ETC Protocol and Interworking
with Non-ETC Modems
To ensure successful data transfer over a cellular channel, your
modem supports the ETC (Enhanced Throughput Cellular)
protocol which improves data communications over cellular
telephone channels. The ETC protocol provides a number of
enhancements to both the V.42 error control protocol and the
V.32 bis modem protocol. These enhancements increase
modem performance and reliability when communicating data
over a cellular telephone channel.
Placing a Call Through a Public
Switched Telephone Network (PSTN)
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 as long as the
land-line modem supports the V.42 error control protocol. The
following describes changes to both the mobile site and land-line
modem that can improve modem performance.
G
If it is known that the remote land-line modem is not an
ETC modem, but that it does support either V.32 bis or
V.32 protocol, then configure the mobile site modem to
operate at 4800 bps by using the %B4800 command.
D-6
Issue 3 April 1994
&F6
Cellular Setting
LAPM or disconnect \N4
–18 dBm
120 seconds
10 seconds
Short train
AT Command
Equivalent
&I18
S7=120
S10=100
S43=1
S89=9
S91=1