MULTITECH MT 2834BLIe MODEM

COMMS # 57

	FECO:	FECO COMMS # 57
	MODIFICATION NO:	N/A
	PRODUCT:	MULTITECH MT 2834BLIe MODEM
	SUB-ASSEMBLY:	N/A
	ESTIMATED MAN HOURS:	N/A
	CLASS OF CHANGE:	MANDATORY
	REASON FOR CHANGE:	INTRODUCTION OF NEW MODEM
	RELATED FECO/AB	N/A

INTRODUCTION OF THE MULTITECH MT2834BLIe MODEM

1 NOTE: Throughout this FECO a SPACE in a string is shown by a Ñ . All other spaces are purely
cosmetic.

2            This is to introduce the Multitech MT2834BLIe modem, which supercedes the Multitech MT2834BLK modem. The
              MT2834BKIe can be used as a PSTN dial up modem, as well as a 2 or 4 wire leased
              line modem.
              It can also be used as the Ufax Modem on Charisma sites.
              It can not be used as the UniFax Modem on UniVision sites.
              The MT2834BLK modem is no longer available.

3            The MT2834BLIe looks identical to the MT2834BLK. The only visible difference is to look at the
              model number on the base beside the serial number. . The front and rear views are shown over.
              WARNING Besides minor enhanced specification differences, the major difference is that THE
              RJ45 PIN OUTS AND CABLING ARE DIFFERENT!!.

4            NOTE:- Whenever an MT2834BLIe is swapped with an MT2834BLK or MT1432, The PSU
              and wiring MUST be swapped as well. The MT2834BLIe requires the REV D version of the
              Power Supply.

6 EDP TECHNICAL SPECIFICATIONS

6.1 Data Rates (modem)

33,600, 31,200 28,800, 26,400, 24,000, 21,600, 19,200, 16,800, 14,400, 12,000, 9600,
7200, 4800, 2400, 1200, 0-300 bps

6.2 Data Rates (fax)

14,400, 9600, 7200, 4800 bps

6.3 Data Format

Serial, binary, asynchronous at 0-300, 1200, 2400, 4800, 7200, 9600, 12,000,

14,400, 16,800, 19,200, 21,600, 24,000, 26,400 28,800 31,200 33,600 bps;

synchronous at 1200, 2400, 4800, 7200, 9600, 12,000 14,400, 16,800,
19,200, 21,600, 24,000, 26,400 28,800 31,200 33,600 bps

6.4 Compatability

            ITU V42bis, V42, Pending ITU Enhanced V34 approval, ITU V34, ITU V34bis, V32, V21*,
            V22 bis, V.22, V.23*, V25bis, *Bell 212A and 103/113, ITU V.17, Group 3 T.4, T.30 and EIA
            TR-29 Class 2 (*Bell 212A and103/113 domestic models only; *V.21/V.23 Int'l models only)

6.5 Error Correction

V.42 (LAP-M or MNP 3 & 4) error correction.

6.6 Data compression

V.42bis, (4:1throughput)or MNP 5 (2:1 throughput) data compression.

6.7 Speed Conversion

Serial port data rates adjustable to 300, 1200, 2400, 4800, 9600, 19,200, 38,400, 57,600 and
115,200 bps.

6.8 Flow Control Options

Xon/Xoff, Hardware RTS/CTS, ENQ/ACK,
Unix-to-Unix Copy Protocol (UUCP) "Spoofing"

6.9 Mode of Operation
Full duplex over both dial-up lines and 2-wire or 4-wire leased lines.

6.10 Command Buffer
60 characters

6.11 Modulation

Trellis Coded Modulation (TCM) at 33,600, 31,200 28,800, 26,400, 24,000,
21,600, 19,200, 16,800, 14,400, 12,000 and 9600bps,

Quadrature Amplitude Modulation (QAM) at 9600 (non-trellis), 4800 and 2400
bps, PSK at 1200 bps, FSK at 300 bps.

6.12 Fax Modulation

V.21CH2 FSK at 300bps

V.27 ter DPSK at 4800 and 2400bps

V.29 QAM at 9600 and 7200bps

V.17 TCM at 14400, 12000, 9600, and 7200 bps

6.13 Fax Carrier Frequencies

V.21 CH2 (Half Duplex)

1650Hz Mark, 1850Hz Space for Transmit Originate

1650Hz Mark, 1850Hz Space for Transmit Answer.

V.27 ter 1800Hz Originate/Answer

V.29 QAM 1700Hz Originate/Answer

V.17 TCM 1800Hz Originate/Answer

6.14       Line Restoral
              When in dial backup mode, modem attempts leased line restoral periodically
              (controlled by S-Register S18 setting)

6.15       Carrier Frequencies
              1800Hz V.32/V.32bis/V.34/Enhanced V.34-
              33.6K/31.2K/28.8K/26.4K/21.6K19.2K16.8K/14.4K/12K906K/7.2K/4.8K

6.16 Carrier Frequencies 2400 & 1200bps (V.22bis/V.22 or Bell 212A Standard)

Transmit Originate:1200 Hz

Transmit Answer: 2400 Hz

Receive Originate:2400 Hz

Receive Answer: 1200 Hz

6.17 Carrier Frequencies, 300 bps (Bell Standard)

1270 Hz Mark, 1070 Hz Space for Transmit Originate

2225 Hz Mark, 2025 Hz Space for Receive Originate

2225 Hz Mark, 2025 Hz Space for Transmit Answer

1270 Hz Mark, 1070 Hz Space for Receive Answer

6.18 Carrier Frequencies V.21

980Hz Mark, 1180 Hz Space for Transmit Originate

1650 Hz Mark, 1850 Hz Space for Transmit Answer

1650 Hz Mark, 1850Hz Space for Receive Originate

980 Hz Mark, 1180 Hz Space for Receive Answer

6.19 Carrier Frequencies V.23

390 Hz Mark, 450 Hz Space for Transmit Originate

1300 Hz Mark, 2100 Hz Space for Transmit Answer

1300 Hz Mark, 2100 Hz Space for Receive Originate

390 Hz Mark, 450 Hz Space for Receive Answer

6.20 Transmit Level

-11dBm (dial-up), -9 or –15 dBm (leased-line);

dBm level selectable with DIP-Switch #3 in leased line setting.

6.21 Frequency Stability
+ 0.01%

6.22 Receiver Sensitivity
-43 dBm under worst case conditions

6.23 AGC Dynamic Range
43dB

6.24 Interface
EIA RS232C/ITU V.24

6.25 Connectors
One DB25 RS232C connector; three RJ11 for phone, dial-up and leased line; & power.

6.26        Diagnostics
                Power-on Self Test, Local Analog Loop, Local Digital Loop, Remote Digital Loop,
                Back-to-Back Test.

6.27        Indicators
                LED’s for Transmit Data, Receive Data, Carrier Detect, Speed Indicators,
                Off Hook, Terminal Ready, Error Correction, Fax, and Error.

6.28        Controls
                Toggle switches for Voice/Data with Originate or Answer, Power On/Off; and
                DIP Switches for various modem options.

6.29 Speaker
Speaker for call progress monitoring

6.30 Operating Temperature
0° to 50° C (32° to 120° F)

6.31 Power Requirements
240V/50Hz (International).

6.32        Dimensions
                6.150" x 9.00" x 1.375"
                15.6cm x 22.9 cm x 3.5cm

6.33        Weight
               1.6 pounds/0.72Kg (without transformer)
               2.6 pounds/1.18Kg with transformer)

6.34 Warranty
Five years

7 MEC IDENTITY
The MEC identity is MT-2834BLI-MODEM

8 CONFIGURATION FOR DIAL UP

8.1         Set the DIP Switch settings as below
                    SW1      UP              SW9        DOWN
                    SW2      DOWN      SW10      UP
                    SW3      UP              SW11      UP
                    SW4      UP              SW12      DOWN
                    SW5      UP              SW13      UP
                    SW6      UP              SW14      UP
                    SW7      UP              SW15      UP
                    SW8      DOWN        SW16      UP

8.2 Connect a terminal set to 9600 bps, 8 bits, no parity, 1 stop bit; to the modem by a Cable Type H.

8.3 Enter ATL5 <CR> and ATL7<CR> this displays modem configuration. Note if necessary.

8.4 Enter AT&F <CR> to set back to factory defaults.

8.5         Note that there are different setup strings for 8 wire and for 3-wire connection.
              Use the correct string for your type of connection.
              Enter the following set-up string.
              Note that all 0 are zeros and not the letter O.

8.6 For 8 wire connection enter
AT &E3 &E7 $SB19200 Q1 %E5 &W0 <CR>

8.7 For 3 wire connection enter
AT &E3 &E7 $SB19200 Q1 %E5 &D0 &W0 <CR>

8.8 DIP SWITCH SUMMARY
Asynchronous Mode

DIP-Switch Condition Effect

#1 *UP DTR dependent on interface

DOWN DTR force On at all times

#2 *UP Hardware Flow Control

DOWN Xon/Xoff Flow Control

#3 UP -15db Transmission Leased Line

*DOWN -9db Transmission Leased Line

#3 UP Disable Command Responses (Q2) (Dial-UP)

*DOWN Enable Command Responses (Q0) (Dial-Up)

#4 *UP UNIX Spoofing Disabled

DOWN UNIX Spoofing Enabled

#5** *UP Enable Automatic Answer (Dial-Up)

DOWN Disable Automatic Answer (Dial-Up)

#6 *UP Maximum throughput On

DOWN Maximum throughput Off

#7 UP RTS dependent on interface

*DOWN RTS Forced On at all times

#8 UP Disable Command Mode

*DOWN Enable Command Mode

#9*** UP Local Digital Loopback

*DOWN Remote Digital Loopback

#10 *UP Dial-Up Operation

DOWN Leased Line Operation

#11 UP "AT" Responses

*DOWN Multi-Tech Responses

#12 UP Synchronous Operation

*DOWN Asynchronous Operation

#13 UP DOWN UP DOWN

#14 UP 28.8Kbps UP 19.2Kbps UP 14.4Kbps DOWN 960bps

#15 *UP CD and DSR function normally

(RS232 pins 6 & 8)

DOWN Carrier Detect (CD) and Data

Set Ready (DSR) always on

#16 UP 2-wire lease

*DOWN 4-wire lease

                  * Standard Factory Settings
                  ** For Leased Line Operation (activated by Switch #10 DOWN) DOWN selects
                      Originated Mode, while UP selects Answer Mode.
                  *** This switch is activated by manual answer switch when ON-LINE.

8.9            For two wire leased line the output is on pins 3 & 4 of the LINE RJ11 connector on the rear
                 of the modem.
                 NOTE This is different from the MT2834BLK

9 CONFIGURATION FOR LEASED LINE

9.1 This details the setup and configuration for the MT2834BLIe when used as a Synchronous
modem on a 2 or 4 wire leased line.

e.g. when connecting together two multiplexors on an analogue leased line.

9.2 INITIAL DIP SWITCH SETTINGS FOR USE DURING SET UP ONLY

SW1 UP SW9 DOWN

SW2 UP SW10 UP

SW3 DOWN SW11 DOWN

SW4 UP SW12 DOWN

SW5 UP SW13 DOWN

SW6 UP SW14 UP

SW7 DOWN SW15 UP

SW8 DOWN SW16 DOWN

9.3 Connect a terminal set to 9600 bps, 8 bits, no parity, 1 stop bit; to the modem by
a Cable Type H.

9.4 Enter ATL5 <CR> and ATL7<CR> this displays modem configuration. Note if
necessary.

9.5 Enter AT&F <CR> to set back to factory defaults

9.6          Enter the following set-up string.
              Note that all 0 are zeros and not the letter O.
              Enter AT #A0 &E3 &E7 #X0 $MB28800 $SB9600 Q1 %E5 &M1 &W0 <CR>

9.7 Enter ATL5 <CR> and ATL7 <CR> (this displays modem configuration)

Check configuration is as per above.

9.8 Switch power off and reset switch settings

9.9 FINAL DIP SWITCH SETTINGS

SW1 UP SW9 DOWN

SW2 UP SW10 DOWN

SW3 DOWN SW11 DOWN

SW4 UP SW12 UP

SW5 DOWN Host End SW13 DOWN 19200

SW5 UP Peripheral End SW14 UP 19200

SW6 UP SW15 UP

SW7 DOWN SW16 UP 2 Wire

SW8 DOWN SW16 DOWN 4 Wire
The modem is set up ready for use.

9.10 DIP SWITCH SUMMARY

DIP-Switch Condition Effect

Synchronous Mode

#1 *UP DTR Dependent On interface

DOWN DTR forced On at all times

#2 *UP SDLC Mode On

DOWN BSC Mode On

#3 UP -15db Transmission (Leased Line)

*DOWN -9db Transmission (Leased Line)

#3 UP Disable Command Mode Response

*DOWN Enable Command Mode Response

#4 *UP AS/400 Mode Off

DOWN AS/400 Mode On

#5 *UP Enable Automatic Answer (Dial up)

DOWN Disable Automatic Answer (Dial up)

#6 *UP Slave Clocking Off

DOWN Slave Clocking On

#7 UP RTS Dependent on interface

*DOWN RTS forced on at all times

#8 UP Disable Command Mode

*DOWN Enable Command Mode

#9 UP Local Digital Loopback On

*DOWN Remote Digital Loopback Off

#10 *UP Dial-Up Operation

DOWN Leased Line Operation

#11 UP External Clock selected

*DOWN Internal Clock selected

#12 UP Synchronous Operation

*DOWN Asynchronous Operation

#13/#14 UP 28.8K bps Operation

#13/#14 DOWN 19.2K bps Operation

#13/#14 UP 14.4K bps Operation

DOWN

#13/#14 DOWN 9600 bps Operation

DOWN

#15 UP* CD/DSR from Interface (Sync&Async)

#15 DOWN CD/DSR Forced On

#16 UP 2-Wire Leased Line (Sync & Async)
#16 DOWN* 4-Wire Leased Line

10 SET UP COMMANDS SUMMARY

#A0 Answer mode starting speed 28800bps downwards to 300

& DO DTR ignored

&E3 No Modem initiated flow control

&E7 XON/XOFF pass-through.

#X0 Selects single XOFF character sent until XON level returns

$MB28800 Max transmission rate Composite Port

$SB9600 Serial Port Baud Rate

$SB19200 Serial Port Baud Rate

Q1 Disable Result Codes

%E5 OK response to + + +

&M1 Async in command mode Sync on line

&W0 Write to NVM

         For two wire leased line the output is on pins 3 & 4 of the LEASED RJ11 connector
         on the rear of the modem.
         NOTE This is different from the MT2834BLK

11 SERVICING
Servicing is by replacement.

12 MODEM CONNECTIONS

12.1 SERIAL PORT CONNECTIONS identical to the MT2834BLK.
Use standard EDP Cable Specifications.

25 pin D Type Male
1 FRAME GROUND
2 TD
3 RD
4 RTS
5 CTS
6 DSR
7 SG
8 CD
11 SSD
20 DTR

12.2        CABLING SUPPLIED WITH MODEM
                2 x Cables, RJ11 to RJ11 4 wire crossover cables, pins 2,3,4, & 5.
                1 x Cables, RJ11 to loose wire connectors for screw clamping, pins 2,3,4 &5.
                1 x Cable RJ11 to BT Socket, 4 wire
                1 x Adaptor, RJ11 Socket to BT Plug, this can be 2 wire for PSTN or 2 wire leased line, but
                MUST BE 4 WIRE for 4 wire leased line.
                Check that this adaptor is 4 wire.

12.3        COMPOSITE LINK CONNECTION
                PSTN RJ11 socket on the rear labelled LINE
                            2 wire pins 3 & 4
                Use RJ11 to RJ11 cable supplied together with the adaptor, RJ11 to BT Connector.

                LEASED LINE RJ 11 socket on the rear labelled LEASED
                            2 wire pins 3 & 4
                            4 wire TX pins 3 & 4
                                        RX pins 2 & 5
                The same RJ11 to RJ11 cable can be used for PSTN and Leased Line Connection, together
                with the adaptors supplied; or the other supplied cable, RJ11 to 4 loose wires.
                NOTE: For 4 wire leased line connection if using the RJ11 socket-to-BT adaptor; the RJ11
                end MUST have four connectors not two.

NOTE These are different from the MT2834BLK

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