Paradyne COMSPHERE 3810 Mounting instructions

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a dyn e
COMSPHERE 3800 Series Modems Firmware Update for Release 4.3
Firmware Update Sheet
Document No. 3810-A2-GB41-25
January 1994
This document contains information on the new paired password
feature, leased-line dial backup enhancements, and other changes in
Firmware Release 4.3 that are not yet documented in the COMSPHERE
3800 Series Modems, Models 3810, 3811, and 3820, User’s Guide
(3810-A2-GB91-20) and COMSPHERE 3800 Series Modems,
Model 3830, User’s Guide (3830-A2-GB91-00). This update will be
incorporated into future releases of the User’s Guides. In the meantime,
keep this document with your User’s Guide.
Bulletin Board System
AT&T Paradyne offers a bulletin board system (BBS) for technical
support and general information on the COMSPHERE R 3800 Series
modem. Feel free to use the BBS to leave messages regarding technical
support issues, obtain information on upgrading modem firmware, or
download updates to user documentation. To access the BBS, dial
813-532-5254 with your modem.
New Features and Configuration Options
Table 1 shows the new or enhanced features and configuration options
available with Firmware Release 4.3. In the left column is the title of
the change or addition, with references to related page numbers, if any,
in the COMSPHERE 3800 Series Modems Models 3810, 3811, and
3820 User’s Guide (shown as 3810) and the COMSPHERE 3800 Series
Modems Model 3830 User’s Guide (shown as 3830). In the right
column is information about the change.

2
Table 1
(1 of 8)
New Features and Changes
Feature or
Configuration
Option Notes
Set Answer
Security
VF_w/_DTE
The 3810, 3811, and 3820 modems can be configured to
require both a VF-side (Voice Frequency) password and
a DTE-side (Data Terminal Equipment) password before
DTE access is permitted.
The new Set Answer Security option VF_w/_DTE allows
specification of related VF-Side and DTE-side password
pairs. In this configuration, a DTE-side password
submitted must not only be a valid Password Table entry,
but must match the particular entry associated with the
valid VF-side password that was submitted.
The passwords are associated with each other by their
index in the Password Table: VF_plus_DTE passwords
occupy odd-numbered index locations; their DTE_Entry
counterparts occupy the even-numbered index locations
that immediately follow. So, for example, if a VF-side
password is entered that matches the entry in index
location 11, the DTE-side password subsequently entered
must match the entry in index location 12.
VF_plus_DTE passwords must be unique in a
VF_w/_DTE configuration. An attached DTE in
asynchronous operation is required for DTE-side
password entry.
Up to 10 password pairs are permitted. On the
3811 modem this can be optionally increased with the
Expanded Password Table feature, which permits
1500 password pairs.

3
Table 1
(2 of 8)
New Features and Changes
Feature or
Configuration
Option Notes
&Cn:
LSD Control
3810: pp. 4-19, 5-12
3830: p. 3-10
Line Signal Detect (LSD) Control is among the DTE
Interface Configuration Options, and determines the
usage and meaning of the LSD signal. The
&C6 command (BridgeRetrain) is new.
&C0 Forced on. The LSD signal is always on.
&C1 Standard RS232. LSD is on only while the
remote modem’s carrier signal is detected.
&C2 Wink When Disconnect. LSD is normally
forced on; upon disconnecting, it is turned off
for approximately one second.
&C3 Follows DTR. The state of the LSD signal
matches that of the DTR signal.
&C4 Simulated Control Carrier. LSD follows the
state of the remote modem’s RTS, via V.13
simulated control carrier signaling. The
remote modem’s RTS Action configuration
option must be set to Simulated Control
Carrier.
&C5 DTR/Disconnect Off. The state of the LSD
signal follows DTR, except upon disconnect,
when it is turned off. DTR must then be
turned off and on to turn LSD on again. The
DTR Action configuration option must be set
to Stndrd_RS232 (&D1 or &D2).
&C6 Bridge Retrain. LSD behaves as if it were set
for Standard RS232, except that it is turned
off when a retrain condition lasts longer than
10 seconds, and turned on again when no
retrain condition is detected for a period of
10 seconds.

4
Table 1
(3 of 8)
New Features and Changes
Feature or
Configuration
Option Notes
&S6:
DSR Control
Dial Backup Toggle
3810: pp. 4-15, 5-15
3830: p. 3-13
Data Set Ready (DSR) Control is among the DTE
Interface Configuration Options, and determines the
usage and meaning of the DSR signal. The
&S6 command (DialBkToggle) is new.
&S0 Forced On. The DSR signal is always on.
&S1 Standard RS232. The modem controls DSR,
turning it on during the handshaking process,
and off upon disconnect.
&S2 Wink When Disconnect. DSR is normally
forced on, and is turned off for 1–2 seconds
upon disconnect.
&S3 Follows DTR. When the modem receives
Data Terminal Ready (DTR), it returns DSR.
&S4 On Early. DSR is off when the modem is idle.
It is turned on when a command is issued to
enter Data mode.
&S5 Delay to DTE. Like the Standard RS232
option, except that DSR is not turned on until
the modem enters Data mode.
&S6 Dial Backup Toggle. DSR is turned off during
a dial backup attempt in Leased mode, and
on when such an attempt completes. DSR is
also turned off when a disconnect begins, and
on when the disconnect is complete.

5
Table 1
(4 of 8)
New Features and Changes
Feature or
Configuration
Option Notes
S46:
Bad Lines Auto
Originate
3810: pp. 4-40, 5-24
The Auto Dial Backup Control option (S46) has been
expanded and is now designated Bad Lines Auto
Originate. On modems with a shared or integral
Diagnostic Control Panel (DCP), if the Sync Leased
factory preset template is selected, the following options
are available under the Leased Line configuration option
BdLn Auto Orig:
Disable: The modem will not perform a Bad Lines
Auto Originate.
Enable: The modem will originate a call after
30 seconds of continuous bad-line
conditions.
FastBackup: The modem will originate a call after
20 seconds of continuous bad-line
conditions.
2_min: The modem will originate a call after
2 minutes of continuous bad-line conditions.
5_min: The modem will originate a call after
5 minutes of continuous bad-line conditions.
10_min: The modem will originate a call after
10 minutes of continuous bad-line
conditions.
The Bad Lines Auto Originate value also can be set with
the S46=
n command:
S46=0 Disable
S46=1 30 Seconds
S46=2 20 Seconds
S46=3 60 Seconds
S46=4 90 Seconds
S46=5 120 Seconds
. . . .
. . . .
S46=21 600 Seconds
Note that the S46=2 command (FastBackup) has an
effect that is out of sequence with the other values. This
ensures downward compatibility by preserving the
meaning of S46=1 (Enable) as 30 Seconds.

6
Table 1
(5 of 8)
New Features and Changes
Feature or
Configuration
Option Notes
S36:
Rate Auto Originate Rate Auto Originate is a new configuration option. It is available from the Leased Line group on modems with a
shared or integral Diagnostic Control Panel, and can be
set with the S36 command on all 3800 Series modems.
Its purpose is to initiate a dial backup call, using the
phone number in directory location 1, when the
leased-line rate of the modem falls back to or below a
certain speed. From the DCP, possible values for Rate
Auto Orig are:
Disable: The modem will not perform a Rate Auto
Originate.
OnFlBkTo48: If the leased-line rate of the modem falls
back to 4800 bps, a dial backup attempt
will be initiated.
OnFlBkTo72: If the leased-line rate of the modem falls
back to 7200 bps, a dial backup attempt
will be initiated.
OnFlBkTo96: If the leased-line rate of the modem falls
back to 9600 bps, a dial backup attempt
will be initiated.
OnFlBkTo120: If the leased-line rate of the modem falls
back to 12000 bps, a dial backup attempt
will be initiated.
OnFlBkTo144: If the leased-line rate of the modem falls
back to 14400 bps, a dial backup attempt
will be initiated. This is available only on
modems with the V.32
terbo feature.
OnFlBkTo168: If the leased-line rate of the modem falls
back to 16800 bps, a dial backup attempt
will be initiated. This is available only on
modems with the V.32
terbo feature.

7
Table 1
(6 of 8)
New Features and Changes
Feature or
Configuration
Option Notes
S36:
Rate Auto Originate
(continued)
Rate Auto Originate also can be set using the S36= n
command:
S36=0 Disable
S36=1 OnFlBkTo48
S36=2 OnFlBkTo72
S36=3 OnFlBkTo96
S36=4 OnFlBkTo120
S36=5 OnFlBkTo144
S36=6 OnFlBkTo168
NOTE: Rate Auto Originate is valid only when V.32 bis
Autorate is enabled (S76=0).

8
Table 1
(7 of 8)
New Features and Changes
Feature or
Configuration
Option Notes
S37:
Auto Redial Auto Redial is a new configuration option that works in conjunction with the Bad Lines Auto Originate and Rate
Auto Originate options. It is available from the Leased
Line group on modems with a shared or integral
Diagnostic Control Panel, and can be set with the
S37 command on all 3800 Series modems. It allows
repeated automatic dial backup attempts by specifying the
range of Directory Locations that can be tried. From the
DCP, possible values for Auto Redial are:
Dir 1: The modem will use only Directory Location 1
for automatic dial backups.
Dirs 1–2: The modem will use Directory Location 2 in
the event of call failure using Directory
Location 1.
Dirs 1–3: The modem will use Directory Location 3 in
the event of call failure using the preceding
entries.
Dirs 1–4: The modem will use Directory Location 4 in
the event of call failure using the preceding
entries.
Dirs 1–5: The modem will use Directory Location 5 in
the event of call failure using the preceding
entries.
Dirs 1–6: The modem will use Directory Location 6 in
the event of call failure using the preceding
entries.
Dirs 1–7: The modem will use Directory Location 7 in
the event of call failure using the preceding
entries.
Dirs 1–8: The modem will use Directory Location 8 in
the event of call failure using the preceding
entries.
Dirs 1–9: The modem will use Directory Location 9 in
the event of call failure using the preceding
entries.
Dirs 1–10: The modem will use Directory Location 10 in
the event of call failure using the preceding
entries.

9
Table 1
(8 of 8)
New Features and Changes
Feature or
Configuration
Option Notes
S37:
Auto Redial
(continued)
Auto Redial also can be set using the S37= n command:
S37=0 Use Directory Location 1
S37=1 Use Directory Locations 1–2
S37=2 Use Directory Locations 1–3
S37=3 Use Directory Locations 1–4
. . . .
. . . .
S37=9 Use Directory Locations 1–10
NOTE: The modem must be in Originate mode to perform
an automatic dial backup.