Paradyne Modem 3800Plus User Manual

TM  
COMSPHERE 3800Plus Modems  
U.K. Supplement  
Document Number 3980-A2-GK40-20  
November 1996  
Overview  
This document highlights government requirements, safety warnings, installation procedures, features, and  
functions that are unique to COMSPHEREr 3800Plus modems installed within the United Kingdom. This  
document is intended to be used in conjunction with the COMSPHERE 3800Plus Modems Users Guide,  
Document No. 3980-A2-GB30. Please consult the Users Guide for overall operation of the 3800Plus modem.  
Regulatory Information  
Ringer Equivalence Number  
The Ringer Equivalence Number (REN) is a customer guide indicating approximately the maximum number of  
items of apparatus that should be connected simultaneously to the telephone line. The sum of the RENs should  
not exceed four. This value includes any BT-provided instrument which may be assumed to have a REN of 1  
unless marked otherwise. The REN of this modem is 1.  
Connection to Leased Lines  
If any other apparatus, including cable or wiring, is connected between the apparatus and the point of connection  
to any speechband circuit, then all that other apparatus shall comply with the following:  
1. The overall transmission characteristics of all that other apparatus shall be such as to introduce no material  
effect upon the electrical conditions presented to one another by the apparatus and the speechband circuit;  
and  
2. All that other apparatus shall comprise only:  
(i) apparatus approved for the purpose of connection between the apparatus and a speechband circuit; and  
(ii) cable or wiring complying with a code of practice for the installation of equipment covered by this  
part of BS 6328 or such other requirements as may be applicable.  
This modem is suitable for connection to BT circuits with signalling at a nominal frequency of 2280 Hz and may  
be connected to multipoint or point to point circuits. The apparatus does not require signalling or otherwise use  
the frequency range 0200 Hz.  
No d.c. interaction is intended between the modem and the telephone network.  
This apparatus may be directly connected to a speechband circuit or connected to a relevant branch system for  
speechband circuits.  
1
 
Equipment List  
Table 2 shows a list of modems and telephone cords available for use in the United Kingdom.  
Table 2  
Equipment List for the United Kingdom  
Equipment  
Model/Part Number  
3810Plus 4-wire/2-wire standalone  
3811Plus 4-wire/2-wire carrier card  
3980-A2-303  
3981-B1-004  
8-position, 4-wire to BT631A modular cord (leased line)  
8-position, 2-wire to BT431A modular cord (dial line)  
6-position, 4-wire modular cord, 7-foot length  
8-position, 8-wire modular cord, 14-foot length  
8-position to 6-position crossover modular cord  
035-0170-0031  
035-0169-0031  
125-0067-0031  
125-0053-1431  
125-0054-1531  
3810Plus Input Voltage Requirements  
The power supply used with the 3810Plus modem (Figure 1) is designed for an input voltage of 240 Vac  
(± 10 percent), and an input frequency of 50 Hz.  
3810Plus Modem Installation  
The following procedures describe how to connect the standalone modem to the leased line, dial line, and power  
supply.  
Before installing your modem, make sure your installation site is clean and well-ventilated. Allow space around  
the modem for installing cables and telephone cords, and make sure the modem is located within reach of the  
ac power outlet. The distance between your modem and DTE should be minimized if DTE data rates exceed  
19,200 bps. Also, low capacitance cables may be necessary for speeds greater than 19,200 bps or distances greater  
than 50 feet.  
Figure 1 shows how 3810Plus modems are connected to certain TELCO jack types using the supplied cables.  
3810Plus 4-wire/2-wire Leased-Line Connection  
Use the following procedure to connect a 3810Plus to the leased-line network interface (use the VF cord labeled  
LEASED LINE):  
1. Insert the 8-position, 4-conductor modular plug into the jack labeled LEASED (3810Plus), Figure 1.  
2. Insert the BT631A-type modular plug into the leased-line network interface.  
3810Plus Dial-Line Connection  
Use the following procedure to connect the modem to the dial network interface (use the VF cord labeled  
DIAL LINE):  
1. Insert the 8-position, 2-conductor modular plug into the jack labeled DIAL, Figure 1.  
2. Insert the BT431A-type modular plug into the dial network interface.  
3
 
Power Supply Connection  
Use the following procedure to connect the standalone modem to an ac power outlet:  
1. Make sure the modem’s power switch is in the OFF position.  
2. Insert the power supply’s cylindrical connector into the modem’s rear panel power receptacle  
(Figure 1).  
3. Insert the transformer into the appropriate grounded ac outlet in accordance with requirements as stated in  
EN60950: ‘‘For pluggable equipment, the socket outlet shall be installed near the equipment and shall be  
easily accessible.”  
4. Refer to the Modem Power-Up section in Document No. 3980-A2-GB30 for modem start-up procedures.  
DIAL  
LEASED LEASED  
(3810Plus) (3820Plus)  
PWR ON OFF  
NMS  
DTE  
8-POSITION,  
8-POSITION,  
4-CONDUCTOR  
KEYED PLUG  
FOR  
LEASED-LINE  
NETWORK  
2-CONDUCTOR  
KEYED PLUG FOR  
DIAL NETWORK  
OPERATION  
OPERATION  
BT631A-TYPE  
PLUG FOR  
LEASED  
NETWORK  
INTERFACE  
POWER  
SUPPLY  
BT431A-TYPE  
PLUG FOR DIAL  
NETWORK  
INTERFACE  
495-14711  
Figure 1. 3810Plus Rear Panel and Power Supply  
4
 
3811Plus Modem Installation  
To install the 3811Plus modem (carrier card) into the COMSPHERE 3000 Series Carrier, follow the same  
installation procedures described in the 3811Plus Modem Installation section of Document No. 3980-A2-GB30.  
For correct power, DTE, dial, and leased-line cabling procedures, refer to the COMSPHERE 3000 Series Carrier,  
Installation Manual, Document No. 3000-A2-GA31.  
Note that the 3811Plus modem supports the following features:  
Carrier assembly  
— 3000-B1-301 – COMSPHERE 3000 Series Carrier with 230 volt power transformer unit  
— 3000-B1-701 – COMSPHERE 3000 Series Carrier with 200 volt power transformer unit (Hong Kong)  
Network Interface Modules (NIMs)  
— 3000-F1-003 – RJ21X NIM without the Make Busy and Service Line feature  
Configuration Options  
This section lists functions and configuration options that are unique to the operation of 3800Plus modems  
installed in the United Kingdom. The information described in this section differs from what is listed in  
Document No. 3980-A2-GB30.  
Please note that if a function or configuration option is not listed in this supplement, then your modem’s  
functionality and operation follow what is described in Document No. 3980-A2-GB30.  
Control Branch — Make Busy/Remove Make Busy Function  
The Make Busy function, described in Document No. 3980-A2-GB30, is not offered in the 3810Plus or 3811Plus  
modems (3980-A2-404 and 3981-B1-004) for the United Kingdom. If this function is selected from the diagnostic  
control panel (DCP), the message Invalid Command appears.  
Control Branch — Service Line/Disconnect Service Line Function  
The Service Line function, described in Document No. 3980-A2-GB30, is not offered in the 3811Plus modem  
(3981-B1-004) for the United Kingdom. If this function is selected from the DCP, the message Invalid  
Command appears.  
Configuration Tables  
Tables 3, 4 and 5 describe configuration options that are different for 3800Plus modems installed in the  
United Kingdom.  
5
 
Table 3  
Line Dialer Configuration Options for the United Kingdom  
Blind Dial Paus: 2sec  
Nxt 2sec  
Blind Dial Pause. Set to 2 seconds. Read-only and cannot be changed. Only appears when Dial Tone Detect is disabled.  
The AT command is S6=2 and cannot be changed.  
NoAnswer Timout: 45sec  
Nxt 45sec 30sec 60sec  
No Answer Abort Time-out. Set to 45 seconds.  
The AT command is S-Register S7=n, where n is a value from 1 to 60 in 1-second increments.  
Auto Make Busy: Disable  
Nxt Disable  
Auto Make Busy. Set to Disable. Read-only and cannot be changed. Only appears when using 3811Plus modems.  
The AT command is S40=0 and cannot be changed.  
MakeBusyVia DTR: Disable  
Nxt Disable  
Make Busy Via DTR. Set to Disable. Read-only and cannot be changed.  
The AT command is S69=0 and cannot be changed.  
Table 4  
Dial Line Configuration Options for the United Kingdom  
Dial Line Rate: 2400(V22bis)  
Nxt 2400(V22bis) 1200(V22) 1200(212A) 0–300(V21) 0–300(103J)  
Dial Line Rate. Does not support the Bell modulation schemes of 1200 (212A) and 0–300 (103J).  
NOTE: The rates and modulations displayed for Dial Line Rate depend on the setting of the Modulation configuration  
option. The selection shown above is displayed when the Modulation configuration option is V21/V22/Bell.  
The factory default is 28800(V34).  
AT command for Dial Line Rate is S-Register S41=n, where n is:  
6 = 2400 (V.22bis)  
7 = 1200 (V.22)  
10 = 0–300 (V.21)  
Dial TX Level: –9 dBm  
Nxt –9 dBm  
Dial Transmit Level. Set to –9 dBm. Read-only and cannot be changed.  
The AT commands are &I9 and &J11 and cannot be changed.  
V22b Guard Tone: 1800 Hz  
Nxt 1800 Hz  
V.22bis Guard Tone. Set to 1800 Hz. Read-only and cannot be changed.  
The AT command is &G2 and cannot be changed.  
Table 5  
Leased Line Configuration Options for the United Kingdom  
Leased TX Level: –13 dBm  
Nxt –13 dBm  
Leased Transmit Level. Set to –13 dBm. Read-only and cannot be changed.  
The AT command is S45=13 and cannot be changed.  
6
 

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