Paradyne COMSPHERE 3810 Istruzioni per l'installazione

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=

, where

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

Dial Transmit Level Type

&J0 Permissive

&J1 Programmable (Model 3811 modem only)

Factory setting is Permissive.

NOTE: &J

overrides the &I

command.

Configure\Edit

\Dial Line

S83 MI/MIC Dialing

be used to force the modem into the originate

handshake after first dialing a call.

0 = Disable

1 = Enable (Model 3811 modem only)

Factory setting is Disable.

Configure\Edit

\Line Dialer

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