Paradyne COMSPHERE 3820 User manual

Brand
Paradyne
Model
COMSPHERE 3820
Category
Modems
Type
User manual

This manual is also suitable for

TM
1
3810-A2-GK40-00
September 1996
COMSPHERE Models 3810 and 3820 Hardware Revision
Document Number 3810-A2-GK40-00
September 1996
Description
To improve resistance to damage from lightning, two generally disused circuits
were removed from the Model 3810 and 3820 modems. These circuits permitted
a programmable transmit level and MI/MIC (Mode Indicate and Mode Indicate
Common) dialing. Both features are still available on the Model 3811 modem.
The configuration options Dial TX Level (in the Dial Line group of the Configure
branch) and MI/MIC Dialing (in the Line Dialer group of the Configure branch) are
affected, as are the AT command equivalents &J and S83. File this notice with
your copy of the
COMSPHERE 3800 Series Modems Models 3810, 3811, and
3820 User’s Guide
(Document No. 3810-A2-GB30-10).
Changes to Configuration Options
Table 9-3
Line Dialer Configuration Options
MI/MIC Dialing: Disable
End Disable Enable
MI/MIC Dialing. Also known as D-Lead signaling, is required by some PBX systems,
older data phones, and security callback systems. It forces the modem into the
originate handshake after first dialing a call.
Disable – Modem ignores activity on the MI/MIC contacts.
Enable – Model 3811 modems only. When the MI/MIC leads are connected then
disconnected, the modem goes off-hook and looks for the answer sequence from the
remote modem. If the sequence is detected, the local modem handshakes and
connects with the remote modem. A 26-pin D-Lead control connector is located on the
rear of the 3000 Series Carrier for MI/MIC Dialing.
The factory default is Disable.
AT command is S-register S83=
n
, where
n
is 0 for Disable and 1 for Enable.
2
3810-A2-GK40-00
September 1996
Table 9-4
Dial Line Configuration Options
Dial TX Level: Permissv(–9)
Nxt Permissv(–9) Programmable –10 dBm –11 dBm –12 dBm –13 dBm
–14 dBm –15 dBm –16 dBm –17 dBm –18 dBm –19 dBm –20 dBm
–21 dBm –22 dBm –23 dBm –24 dBm –25 dBm –26 dBm –27 dBm
–28 dBm –29 dBm –30 dBm –31 dBm –32 dBm ETC 1.0_Cell ETC 1.1_Cell
Dial Transmit Level. Sets the power output level of the transmit signal over dial lines.
Permissive (–9 dBm) – The modem transmits data at approximately –9 dBm. This is
true whether the modem is connected to an RJ11-type permissive jack or to an RJ41 or
RJ45 programmable jack.
Programmable – The modem transmits at a predetermined level set by programming a
resistor in the RJ41 or RJ45 jack. The program resistor value is only read upon
power-up or after reset. This configuration option is valid only for the Model 3811
modem.
ETC 1.0_Cell – Transmit level is automatically adjusted in response to line conditions
according to the proprietary Enhanced Throughput Cellular 1.0 specification. Use only
with remote modems set to ETC 1.0_Cell, and limit the data rate to 4800 bps.
ETC 1.1_Cell – Transmit level is automatically adjusted in response to line conditions
according to the proprietary Enhanced Throughput Cellular 1.1 specification.
The factory default is Permissv(–9).
AT command for Permissive mode is &J0.
AT command for Programmable mode is &J1.
AT commands for –10 through –32 dBm are & 10 through & 32.
AT command for ETC 1.0_Cell is & 99.
AT command for ETC 1.1_Cell is & 100.
Changes to AT Commands
Tables 14-1 and 14-2
3800 Series AT Commands and S-Registers
AT Command
or S-Register
Description
Front Panel
Branch
&J
n
Dial Transmit Level Type
&J0 Permissive
&J1 Programmable (Model 3811 modem only)
Factory setting is Permissive.
NOTE: &J
n
overrides the &I
n
command.
Configure\Edit
\Dial Line
S83 MI/MIC Dialing
Register determines if MI/MIC control leads can
be used to force the modem into the originate
handshake after first dialing a call.
Register has the following values:
0 = Disable
1 = Enable (Model 3811 modem only)
Factory setting is Disable.
Configure\Edit
\Line Dialer
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Paradyne COMSPHERE 3820 User manual

Brand
Paradyne
Model
COMSPHERE 3820
Category
Modems
Type
User manual
This manual is also suitable for
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