1.1Digicom SpA
SNT12 & SNT13 ENGLISH Generality
1. GENERALITY
This operating manual describes the features of the SNT12 and SNT13
Digicom Terminal Adapter.
All products provide the same commands and registers because they use the
same configuration modes and the same rensponse messages.
Unless othervise specified the descriptions in this manual apply equally to
SNT12 and SNT13. The text will specify when informations refer only to a
particular model/family.
Order Code SNT12 ..........................................................................8D5391
(1B+D, V.110 Async, V.120, e V42bis, V34/V17 integrated Modem/Fax)
Order Code SNT13 ..........................................................................8D5400
(1B+D, V.110 Async, V.120 e V.42bis)
1.1. PRODUCTS DESCRIPTION
SNT12 and SNT13 are internal installation XT/AT bus Terminal Adapters.
All Digicom Terminal Adapters familys are developed to comply with
EUROISDN NET 3 interim CTR3 base access standard.
SNT12 and SNT13 allows the following ISND network connections:
PRODUCT NUMBER OF RATE ADAPTION INTEGRATED
ASYNCRONOUS V34/V17
DATA CHANNEL MODEM/FAX
SNT12 1 up to 115,2 Kbit/s. V110, V120, V42bis YES
SNT13 1 up to 115,2 Kbit/s. V110, V120, V42bis NO
SNT12 presents, in one apparatus, two devices: a Terminal Adapter and a
Modem/Fax V.34/V.17 to be used to support remote analog connections.
The rate adaption on the digital channel is complied in according to the CCITT
V110 and V120 standards.
1.2 Digicom SpA
SNT12 & SNT13 ENGLISH Generality
Other features of the Terminal Adapters are the following:
lAT command set
lAsynchronous V25bis command set
lV42bis data compression
lAutologon
lCall - back
lAutobaud up to 115200 bit/s.
l4 selectable factory profile
l4 selectable user configuration
l8 stored phone number for AT and V25bis command set
lAnalog Local Loop and Digital Local Loop
lModem standards V21, V22, V22bis, V23, V32, V32bis, V Fast Class,
V34 (SNT12 only)
lFax standards V27ter, V29 and V17 (SNT12 only)
lModem Error Correction MNP4, MNP10 and V42 (SNT12 only)
lModem Data Compression MNP5 and V42bis (SNT12 only)
The Digicom Terminal Adapters are be able to support ISDN network base
services and advanced services.
Now it is important describe the difference between base services and
advanced services present into the ISDN network:
BASE SERVICES:
These kind of services are available when you provide an agreement
with the ISDN network administrator.
ADVANCED SERVICES:
These services are not included in the base agreement with the ISDN
network administrator. To activate the advanced services it is neccessary
to make a request to the ISDN network administrator.
In the following tables, are described the base and advanced services available
in the Digicom Terminal Adapters:
1.3Digicom SpA
SNT12 & SNT13 ENGLISH Generality
BASE SERVICES
Type of sevice Description Activation Present into
Digicom T.A.
Telephone recording Is a base service whitch permits to know the number Implemented
meter of units present in the telephone recording meter. in the 3.0
new firmware
release
Calling Line Is a base service offered to the called party whitch YES
Identification provides the calling party’s ISDN-number,
Presentation[CLIP] possibly with sub-address information, to the called party.
SUPPLEMENTARY SERVICES
Type of sevice Description Activation Present into
Digicom T.A.
Advice of charge Is a supplementary service allowing the user It is necessary Implemented
payng for a call to be informed of to make a in the 3.0
usage-based charging information. request to the new firmware
SDN network release
administrator
Multi Subscriber Is a supplementary services whitch provides It is necessary YES
Number [MSN] the possibility fo assign multiple ISDN to make a
numbers to a single interface. request to the
SDN network
administrator
Subaddressing[SUB] Is a supplementary service whitch permits It is a sequence YES
to have an addressing into a ISDN network. of AT commands
It is possible identify a specific terminal using
an address stored into the TA.
ATTENTION
If you want to use the supplementary services, it is very important to
request the activation to the ISDN network administrator !!!
1.4 Digicom SpA
SNT12 & SNT13 ENGLISH Generality
1.2. TECNICHAL DESCRIPTION
1.2.1. Standards Compatibility
The SNT12 and SNT13 comply with the following standards:
ISDN ETS 300 012 / I430 layer 1
ETS 300 125 / Q920 - Q921 layer 2
ETS 300 102 / Q930 - Q931 layer 3
SAFETY - PROTECTIONS
EN 41003
EN 60950
ETS 300 047-1
ETS 300 047-2
ETS 300 047-3
EMC EN 50082-1
EN55022
1.2.2. Mechanical dimension
Width 157 mm.
Height 106 mm
Depth 20 mm
Weight 400 g.
1.2.3. Electrical description
Consumption: 2 W ca
Supply voltage: +5V, -5V, +12V, -12V (from PC bus)
Digital interface
Interface: XT/AT bus connector
Asyncronous DTE Speed: 300, 1200, 2400, 4800, 9600, 19200, 38400,
57600, 115200 bit/s.
V.110 Line Speed: 1200, 2400, 4800, 9600, 12000, 14400, 19200,
38400bit/s.
1.5Digicom SpA
SNT12 & SNT13 ENGLISH Generality
V.120 Line Speed: 1200, 2400, 4800, 9600, 12000, 14400, 19200,
64000 bit/s.
ISDN interface
Interface: Bus S 1B + D, base access
Connector: RJ 45
Protocol: EUROISDN
Operating temperature
Operating ambient temperature: 0° C ÷ + 45° C
Storage temperature: -20° C ÷ + 80° C
Relative Humidity: from 5% to 92% (If the humidity doesn’t
condense)
PC BUS
INTERFACE
BUS XT/AT
CONNECTOR
UART
73M55 0
MC68302
SWITCH
MODEM
ISDN
RAM
1MBITS
RAM
1MBITS
OT PR OM
2MBITS
or
FLA SH
EPROM
OT PR OM
2MBITS
or
FLA SH
EPROM
DATA BUS
ADD BUS
IOM-2 BUS
EEPROM
512
BYTES
PSB2186
TRANSCEIVER
LINE
PROTECT.
LINE
PROTECT.
CS
CLOC K
WART
RESET
ISDN
SERIAL
INT ERFACE
SW
CMD
COMMON
SERIAL
INT ERFACE
MODEM
V34
MO DEM
SERIAL
INT ERFACE
SPEAKER
CODEC
TX
RX
DTMF
DETECTOR
RING
DTMF D IG ITS
LINE
TRANSF.
LINE
TRANSF.
RJ45
CO MMO N
MODE
CH OKE
*
*
*
*
*
*= SEZIONI MONTATE SOLO per SNT12
FIG.1.1. BLOCK DIAGRAM SNT12/SNT13
1.6 Digicom SpA
SNT12 & SNT13 ENGLISH Generality
1.3. FUNCTIONAL DESCRIPTION
1.3.1. Autobaud
The TA automatically detects DTE speed (until to 115.2 Kbit/s) and parity
format.
The valid parity formats are the following:
7 bit + even/odd parity
7 bit + mark/space parity
8 bit no parity
1.3.2. V42bis Data Compression
The TA’s allows to select (V.120 asyncronous mode only) the data compression
complying with the CCITT V42bis recommendation, for all the DTE speed
from 300bit/s to 115.2 Kbit/s. It is not usual to apply the data compression on
an ISDN network. For this reason it was developed a V42bis release that,
according to V.120 asyncronous mode, introduce a parameter in the negotiation.
1.3.3. Autologon
It is possible to associate a list of options to the stored phone numbers, that
enable some particular procedures. (ex: call with security password).
These procedures allow to access to the autorized system.
1.3.4. Call-Back
Using this feature “A” emplacement calls “B” emplacement. When the
connection is established “B”, where previously was stored the phone number,
disconnects and calls “A”.
1.3.5. Factory configurations
Using a Hayes command, it is very easy to load 4 different factory configuration
present into the Digicom Terminal Adapters.
1.7Digicom SpA
SNT12 & SNT13 ENGLISH Generality
1.3.6. Diagnostic
When a Digicom Terminal Adapter is turned on, starts automatically an
internal diagnostic self test to verify the integrity of hardware and software.
Using the AT command it is possible to activate the normal Analog Local
Loop and Digital Local Loop.
1.3.7. Integrated Modem/Fax (SNT12 only)
The integrated Modem/Fax present into the SNT12 comply the following
characteristics:
Modem standard: V.34, V Fast Class, V.32bis, V.32, V.22bis,
V.22, V.21, V.23
Fax standard: V.17, V.29, V.27ter
Error Correction: MNP10, MNP5, V42
Data Compression: MNP5, V42bis
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