Mitel SX 200 DIGITAL Pabx Superset 3 Telephone Description Manual

							DATASET 2100 Series
1. INTRODUCTION
General
1 .OlThis Section describes the Rack Mounted DATASET 2102 and
theStandalone
DATASET 2 103.
Theseproductsare
Synchronous/Asynchronous data sets which are used with 
Mite1 digital
private automatic branch exchanges (PABX).
Reason for Issue
1.02 This Section is issued to describe the 
DATASET 2100 Series
used with 
Mite1 PABXs.Page 1 
						

							SECTION MITL9141-753-506-NAPage 2 
						

							DATASET 2100 Series
2. GENERAL DESCRIPTION
2.01The DATASET 2100 Series is composed of two North American
variants; a Rack Mounted 
DATASET 2102 and a Standalone
DATASET 2103. The DATASET 2100 Series supports synchronous and
asynchronous data communications at rates up to 19.2 
kilobits per
second, and interface with a 
Mite1 Digital Network Interface Circuit
(DNIC) line card within the PABX.
2.02 These 
DATASETs operate with DNIC digital link technology
which is composed of three channels: a 64 kbps data channel, a
64 kbps voice or data channel (B), and a 16 kbps (D) channel for
control communications between the set and the PABX. Only one B
channel is used with the 
DATASET 2100 Series.
2.03The Standalone 
DATASET 2103 interfaces peripheral devices to
the PABX, while the Rack Mounted 
DATASET 2102 usually inter-
faces a host computer to the PABX.
Environmental Specifications
Operating Environment:
Ambient Temperature: 4 to 49°C (39.2 to 120°F).
Ambient Humidity: IO to 90% RH, noncondensing.
Storage/Shipping Environment:
Ambient Temperature: -40 to 60°C (-40 to 150°F).
Ambient Humidity: IO to 90% RH, noncondensing.
Baud Rates
2.04The 
DATASET 2100 Series operates at the following baud rates:
AsynchronousSynchronous
1101200
1502400
2004800
3009600
60019200
1200
2400
4800
9600
19200
Connector Pin Assignment Tables
2.05 The RS-232 connector on the 
DATASET 2100 Series has the
following pin assignments when operating in Data Communica-
tions Equipment (DCE) mode:
Page 3 
						

							SECTION MITL9141-753-506-NA
PinSignalDesignation
Direction
1
2
3
4
5
6
7
820
22
25TXD
RXD
RTSCTS
DSRDCD
DTR
RIframe ground
transmit data
receive data
ready to send
clear to send
data set ready
signal ground
data carrier detect
data terminal ready
ring indicator
reserved inputto 
DATASETfrom 
DATASETto 
DATASETfrom 
DATASETfrom 
DATASETfrom 
DATASETto 
DATASETfrom 
DATASET2.06 The RS-232 connector on the 
DATASET 2100 Series has the
following pin assignments when operating in Data Terminal
Equipment (DTE) mode with an attached Modem Adapter:
PinSignalDesignationDirection
1
2
34
5
6
7
8
15
17
1920
22
23
24
25TXD
RXD
RTS
CTS
DSRDCD
DB
DDn/a
DTR
RI
CHDA
CNframe ground
transmit data
receive data
ready to send
clear to send
data set ready
signal ground
data carrier detect
SCT
SCRremote digital 
loopbackdata terminal ready
ring indicator
data signal rate selector
XCLK
analog 
loopbackfrom 
DATASETto 
DATASETfrom 
DATASETto 
DATASETto 
DATASETto 
DATASETto 
DATASETto 
DATASETfrom 
DATASETfrom 
DATASETto 
DATASETfrom 
DATASETfrom 
DATASETfrom 
DATASETSynchronous Operation
2.07Transparent 
- The DATASET 2100 Series can operate in trans-
parent synchronous mode. Because the connections are usually
established for a long time (compared to asynchronous connections)
and are important parts of a large data communications network, the D
channel connection is held up while the connection 
is established. The
network management process can obtain statistics on traffic and error
rates while a call is in progress from this D channel. When one
DATASET 2100 drops its connection, it cannot signal to the other; the
PABX must drop this connection with a Terminate B channel command,
which it can do because the D channel is active while the B channel
session is in progress.
2.08Data is clocked to and from the shift registers at a constant
rate by the synchronous clocks on the RS-232 interface. The
data set firmware converts this data into packets which are passed
through the PABX in UI frames. No error detection or correction is
Page 4 
						

							DATASET 2100 Series
performed on this data; synchronous data usually includes its own
error detection and correction protocol, and it is more important to
maintain the synchronization between the two endpoints. The syn-
chronization is done by a software Phase Locked Loop algorithm,
which actually becomes a frequency locking loop.
2.09 x.31 
-It is a protocol for adapting a data rate from a synchro-
nous interface to a 64 kbps channel, such as is used by 
Mite1
PABXs. This mode will allow Mite1 equipment to be connected to
another manufacturer’s equipment without having protocol conversion
in between. The synchronous data being received must be HDLC
based, with a maximum frame size of 512 bytes.
2.10 The 
DATASET 2100 decodes the received HDLC frames and
reformats them into new HDLC frames using the X.31 protocol
on the B channel. The rate conversion is done by transmitting HDLC
flags during B channel idle time. Received frames are depacketized and
transmitted to the attached device in HDLC format at the RS-232
interface synchronous clock rate.
Asynchronous Operation
2.11The DATASET 2100 Series can operate in asynchronous mode
in simplex, half duplex, or full duplex modes. Once the commu-
nications are established between data sets in asynchronous mode,
the D channel connection is dropped, and only the B channel connec-
tion remains. The B channel passes through the PABX, without su-
pervision by the PABX, connected only to the two endpoints.
Back-to-Back Operation
2.12Two 
DATASET 2100 Series may be connected back to back to
communicate directly with each other (typically to bypass a
failed PABX). At least one of the data sets must be in hunt mode; the
data set then alternates between master and slave timing until syn-
chronization is achieved. If both data sets are in hunt mode, it can take
up to one minute to achieve synchronization.
2.13 A back to back connection may be established as above in
either synchronous mode or in asynchronous mode between
two 
DATASET 2100 series. If the DATASET 2100 Series is in master
mode and asynchronous mode, the back to back connection can also
be made with a 
DATASET 1100 series. The data set that is operating in
master mode scans its DIP switches on power up, and sets its operat-
ing parameters according to the settings of the switches.
Timing Modes
2.14There are four modes of timing available with a 
DATASET 2100
series that are used according to the current mode of opera-
tion.
Page 5 
						

							SECTION MITL9141-753-506-NA .
2.15internal
- The Internal clock is used when the DATASET 2100
Series is operating in Data Communication Equipment (DCE)
mode. The transmit clock (SCT) to the Data Terminal Equipment (DTE)
is generated within the 
DATASET’s baud rate generator and is not
synchronized with PABX timing. The 
DATASET’s receive clock (SCR) to
the DTE is extracted from the data received from the far end 
DATASETby the Phase Locked Loop (PLL) circuit within the 
DATASET.2.16System
- The System clock is used when the DATASET 2100
Series is operating in Data Communication Equipment (DCE)
mode. The 
DATASET’s transmit clock (SCT) and receive clock (SCR) to
the DTE are extracted from the data received from the far end devices
by the Phase Locked Loop (PLL) circuit within the 
DATASET.2.17Transmit External
- The DATASET 2100 Series uses the Trans-
mit External clock in either DTE or DCE mode; it is received
from an external clock signal from the attached device. From a DTE
device, the clock is received on RS-232 pin 24; from a DCE device, the
clock is derived from the DCE device’s SCR. The 
DATASET’s receive
clock (SCR) to the DTE is extracted from the data received from the far
end device by the Phase Locked Loop (PLL) circuit within the 
DATASET.2.18Transmit and Receive External 
- When the DATASET 2100
Series is operating in DTE mode, the Transmit -and Receive
External clocks are derived from the attached DCE device. The external
transmit clock is received from the modem’s SCR (pin 17) and trans-
ferred to pin 24 by the DCE adapter; the external receive clock is
received from the modem’s SCT (pin 15) and transferred to pin 18 by
the DCE adapter.
Modem Adapter
2.19
DATASET 2100 Series are DCE devices, as are modems. To
connect a 
DATASET 2100 Series to a modem requires that a
Modem Adapter (pn 
9141-IOO-lOO-NA) be connected to the RS-232
connector on the data set. The Modem Adapter makes the 
DATASET2100 Series appear as a DTE device to the modem. This is used
primarily in Modem Pooling applications.
2.20
There is an 8-position DIP switch on the back of a Rack Mount-
ed 
DATASET 2102 and a Standalone DATASET 2103. It is read
once immediately after 
DNIC Sync is achieved and the operating pa-
rameters are set according to the settings. When viewed from the rear
the DIP switches are 
labelled as follows:
01 02 03 04 05 06 07 08
User accessible switches
Page 6 
						

							DATASET 2100 Series
TABLE 2-1
DATASET 2100 DIP SWITCH SETTINGS
SWITCH 1
DATASET OPERATING MODE
DOWNSET - PBX OPERATION
UPHUNT - BACK TO BACK MODE
SWITCH 2
DOWN
UPASYNCHRONOUS
SYNCHRONOUS
IASYNCHRONOUS MODE
SWITCHES
34DOWN DOWN
UP DOWN’
DOWN UP
UP UP
SWITCHES
567DOWN DOWN DOWN
UP DOWN DOWN
DOWN UP DOWN
UP UPDOWN
DOWN DOWN UP
UP DOWN UP
DOWN UP UP
UP UP UP
DOWN DOWN DOWN
UP DOWN DOWN
DOWNUP DOWN8IDOWN
AUTOBAUDDOWN
110DOWN
150DOWN200
DOWN300
DOWN-600
DOWN1200
DOWN2400
UP4800
UP9600
UP19200
ASYNC FLOW CONTROL
FLOW CONTROL DISABLED
XON/XOFF FLOW CONTROL ENABLED
CTS FLOW CONTROL ENABLED
FLOW CONTROL DISABLED
ASYNC SPEED
1Page 7 
						

							SECTION MITL9141-753-506-NATABLE 2-l (CONT’D)
DATASET 2100 DIP SWITCH SETTINGS
SYNCHRONOUS MODE
I
3DOWN
DOWN
UP
UPSWITCHESSYNC OPERATING MODE
4
DOWN
UPDOWN
UPSWITCH 5INTERNAL CLOCK
SYSTEM CLOCK
TX EXTERNAL CLOCK
TX AND RX EXTERNAL CLOCK
SYNCHRONOUS MODE ONLY
.DOWN
UPTRANSPARENT MODE
X.31 MODE
67DOWNDOWN
UPDOWN
DOWN
UP
UPUPXX SWITCHES
ISYNC SPEEDI8
DOWN
DOWN
DOWN
DOWN
UP1200
2400
4800
9600
19200 ( x= don’t care )
NOTES:
(1)PARAMETER CHANGES MUST BE FOLLOWED BY A POWER
RESET.(2)ALL SWITCH PARAMETERS, EXCEPT SWITCH 1 CAN BE
OVERIDDEN BY THE PBX CDE PARAMETERS.
Page 8 
						

							DATASET 2100 Series
3. RACK MOUNTED 
DATASET 2102
Description
3.01A Rack Mounted DATASET 2102,has LEDs on its front panel, but
no switches or keys for manual operation. Each Rack Mounted
DATASET 2102 interfaces to a PABX Digital Line Card circuit through a
single pair. The DATASHELF 9100 connects to the PABX through a
25-pair cable; each card slot is assigned one of these pairs. Figure 3-l
shows a Rack Mounted 
DATASET 2102.
3.02Its primary function is to interface between a host computer
and the PABX; Standalone 
DATASET 2103s distributed through-
out the building access the Rack Mounted 
DATASET 2102s through the
PABX. The DATACABINET 9000, in which the Rack Mounted 
DATASET2102 is mounted, is usually located within a computer room.
indicators and Connectors
3.03There are five 
LEDs on the front of the Rack Mounted DATASET2102:
- DEVICE TxD
- READY RxD
- ASYNC
- POWER
-C-ARD FUSE O.K. INDICATION
The connectors on the back of a Rack Mounted 
DATASET 2102 are:
- RS-232 connector (1)
-shelf backplane connector (power and tip-ring pair)
- MI/MIC connector
The backplane connector 
pinout is as follows:
PinSignal
1data tip
2no connection
3frame ground
4signal ground
5Tl (ac input)
6T2 (ac input)
7T2 (ac input)
8Tl (ac input)
9signal ground
10frame ground
11no connection
12data ring
Page 9 
						

							SECTION MITL9141-753-506-NAThe 
MI/MIC Teledapt connector pinout is as follows:
PinSignal
1no connection
2modem Ml
3no connection
4no connection
5modem MIC
6no connection
Installation
WARNING
ANY CONNECTION OF THIS SET TO AN OFF PREMISE APPLICATION,
AN OUT OF PLANT APPLICATION, OR TO ANY OTHER EXPOSED
PLANT APPLICATION MAY RESULT IN A SAFETY HAZARD, AND/OR
DEFECTIVE OPERATION, AND/OR EQUIPMENT DAMAGE.
CHART 3-l
INSTALLATION OF A RACK MOUNTED 
DATASET 2102
Step
1.Action
Complete system cabling and Customer Data Entry for the slot into which the
DATASET is being installed; cabling is defined in DATASHELF 9100 installation
procedures.
2.
3.Set the eight DIP switches as required for this installation. Refer to Table 2-l.
install a Rack Mounted 
DATASET 2102 by plugging it into its assigned slot in
the DATASHELF 9100; these assignments are done when the system is
configured. All 
LEDs should flash 5 times, indicating that the DATASET has
passed its self-test. If this does not happen, the 
DATASET is faulty and must be
replaced.
4.Ensure the POWER 1 LED is on continuously, indicating no open fuse within the
data set; if off, a fuse is open or there is a fault in the wiring connection,
5.Plug the RS-232 interconnecting cable into the RS-232 connector at the back
of the Rack Mounted 
DATASET 2102 and connect it to the host device. When
the RS-232 connector is attached, the DEVICE LED should be on, unless the
device is an auto-answer device, and defined as such in CDE (usually only
destination devices such as host computers are auto-answer). If the device is
not auto-answer, and the DEVICE LED does not come on, make sure the device
is powered on, and then use an RS-232 break-out box to verify that the device
provides DTR. If the device does not provide DTR, select CDE option “RS-232
Force High” for that device.
Page 10