This document provides information on the NT1 Plus network termination for ISDN. It allows connection of analogue phones and fax machines to an ISDN network, providing standard ISDN services. The NT1 Plus has dual POTS interfaces for connecting analogue devices, an So interface for up to 8 digital terminals, and supports pulse/DTMF dialling and standard supplementary services. It can be configured locally or remotely via DTMF commands and has diagnostic features accessible via the network.

1. Aethra ISDN termination with dual analogue interfaces NT1 Plus
SWITCH SETTINGS ISDN access, through a normal telephone
NT1 Plus The NT1 Plus is a network termi- POWER SUPPLY
The front panel has a removable cover to or a PC connected to an Aethra TA1008 nation for the ISDN basic rate The NT1 Plus has no batteries and is powered through an internal mains power supply
access switch settings for: terminal adapter or an Aethra Front End access, which adds to the featu- or from the power supplied by the network over the line pair.
- So bus configuration (short passive/exten- Power consumption from the network is limited to 1400 mW in the worst case (one POTS
ded) LOCAL AND REMOTE MAINTENANCE
res of a standard ISDN network interface powered under emergency conditions).
- emergency power (one of the POTS inter- The NT1 Plus provides a list of diagnostic termination (NT1) a dual inter-
faces or the So bus) features: face to analogue terminals desi- So INTERFACE
- terminating resistors for the So Bus. - download of firmware upgrades gned for connection to POTS On the So interface the NT1 Plus provides the same quality of service as a standard NT1,
- remote diagnostics for POTS interfaces (Plain Old Telephone System) including:
INSTALLATION AND CONFIGURATION - ringing voltage Aethra Telecomunicazioni - full compliance to regulatory standards
Internet: www.aethra.com
networks. These terminals inclu-
Local and Remote installation and confi- - microphone current de standard phone sets, group - up to 8 terminals allowed on the S bus
guration procedures are available through - capacity measurement on Email: mktg@aethra.com - complete transparency to the test procedures from the exchange.
a DTMF phone either connected to one of the POTS interfaces
three fax machines, automatic
the POTS interfaces or from a “secured” - short circuit control. Headquarters: answering machines, data POTS INTERFACES
Ancona 60020 - Italy modems, small Private Branch POTS interfaces support both pulse and DTMF dialling. Local tone generation (dial tone,
Via Matteo Ricci, 10 Exchanges (PBX), Key Telephone congestion and call waiting) is provided when required. Register recall and hook-flash
TECHNICAL SPECIFICATIONS Telephone: +39.071.218981 Systems (KTS), cordless and keys are also supported (e.g. to invoke supplementary services).
Fax: +39.071.887077 DECT phones, etc.
Line interface STANDARD SUPPLEMENTARY SERVICES
Video: +39.071.2189701/2/3/4
Line codes 2B1Q or 4B3T - Multiple Subscriber Numbers (MSN).
The NT1 Plus therefore allows - Calling Line Identification Presentation (CLIP).
Standard compliance TS 102 080 Offices: network providers to overcome
Power consumption max 1.4 W - Connected Line Identification Presentation (COLP).
Turin, Milan, Venice, Bologna, a major obstacle to the diffusion
Range up to 1kΩ (V remote supply > 90Vdc)
Rome, Naples, Palermo, of ISDN in the Small Office And OPTIONAL SUPPLEMENTARY SERVICES
POTS interfaces Miami, Dubai, Beijing, - Call Forwarding (Unconditional - CFU, On User Busy - CFB, No Reply - CFNR).
Home Office (SOHO) and in the
Santiago, Lima, Paris FUNCTIONAL CHARACTERISTICS - Call Completion on Busy Subscriber (CCBS).
Dialling mode DTMF, pulse residential markets: network - A full ISDN service is to be provided to terminals connected to the So bus. - Call Waiting (CW).
Impedance 600Ω or complex (optional) providers can offer a complete
Speech quality Q.552 - NT1 Plus shall operate with all existing analogue equipment, and it shall support - Malicious Call Identification (MCID).
No load voltage < 60 V
ISDN service, aligned to current supplementary telephony services (3-way conferencing, call diversion, call waiting, etc.). - Calling Line Identification Restriction (CLIR).
d.c. load from 0 to 800Ω regulations and, at the same - Emergency operation is to be guaranteed to one POTS interface. - Line Identification Restriction (COLR).
time, subscribers are not requi- - Provision of convenient remote configuration, maintenance and diagnostics and the - 3-Pty Conference (3PC).
Ringing Generator capability to remotely download the operating firmware.
red to purchase any additional - Closed User Group (CUG).
Ringing Voltage > 40 V / 2kΩ - Support to both 2B1Q and 4B3T line code. - Call Hold (CH).
equipment, such as digital ISDN
Ringing load approx. 3 REN phones and/or terminal adap- - Advice of Charge (AOC).
Frequency 25 Hz, asymmetrical STANDARD NT1 FEATURES
Max distortion 10% ters to deploy basic telephony - 2-wire interface on the U reference point.
services. - 4-wire user bus on the S/T reference point.
Reference Standard for Environmental Quality
- Emergency power supply to user terminals.
Safety EN60950 (oct. 96)
EMC and protections ETS 300 047, ETS 300 386-2-2 ANALOGUE TERMINALS INTERFACE FEATURES
Transport ETS 300 019-1-2 class 1.2 - Pulse and/or tone dialling.
Storage ETS 300 019-1-1 class 2.2 - 25 Hz low distortion asymmetric ringing signal.
Operation ETS 300 019-1-3 class 3.2 - PCM speech coder, according to G.711, A-law.
Overvoltages protection exceeds ITU-T K21 - Emergency power to one POTS interface.
Mechanical
ADDITIONAL FEATURES ISDN "U"
Dimensions 212x160x57 mm. - Easy installation, operation and maintenance.
Weight 1100 gr. - Local or remote configuration through a standard DTMF phone.
Power Supply - Local or remote maintenance, including configuration and diagnostics on the POTS
and the U interface.
Current <100 mA - Local and remote download of firmware upgrades. "S"
Voltage 230 Vac + 10% - 15% 50 Hz
- Support for stimulus and ETSI supplementary services.
TE1 TE2 TE8
Design: Uttinacci & Turano - Roma
CONNECTIONS
So bus Two modular connectors 8p/4c RJ-45, ISO8877
Terminal blocks (optional)
POTS Two modular connectors 6p/2c RJ-11
Terminal blocks
Line pair (U) 2-pole terminal block, or RJ-11 Aethra - Ancona
Mains supply Internal power supply, bipolar cord ISO9001 Certified
All rights reserved. Technical specifications are subject to change without prior notice. Code 071063000GB Rev.0 (03/01)
Enhanced ISDN network termination for Internet access and analogue phones
Aethra NT-IP
INSTALLATION AND CONFIGURATION LOCAL AND REMOTE MAINTENANCE
NT-IP
The NT-IP is a network termination for the So INTERFACE
Local and Remote installation and confi- The NT-IP provides a list of diagnostic ISDN basic rate access, which adds to the On the So interface the NT IP provides the same quality of service as a standard NT1,
guration procedures are available through features: features commonly found in a standard ISDN including:
a DTMF phone either connected to one of - Download of firmware upgrades. network termination (NT1), two standard - Full compliance to regulatory standards.
the POTS interfaces or from a “secured” - Remote diagnostics for POTS interfaces. telephone ports and an RS232 interface to - Up to 8 terminals allowed on the S bus.
provide a fully digital, fast and reliable con-
ISDN access, through a normal telephone - ringing voltage - Complete transparency to the test procedures from the exchange.
nection to a PPP terminal server, such as
or a PC connected to a NT-IP or an Aethra - microphone current Internet Service Provider (ISP), remote
TA-INET or TA-IP or Front End. Some para- - capacity measurement on access, e-mail access server, etc. So POWER SUPPLY
meters related to the RS-232 port can the POTS interfaces Standard PS1 phantom supply to the So bus is provided when the local a.c. power is
only be configured using AT-commands. - short circuit control. Aethra Telecomunicazioni available.
Internet: www.aethra.com BENEFITS
TECHNICAL SPECIFICATIONS Email: mktg@aethra.com U INTERFACE
AO/DI The NT-IP fully complies to ETS Technical Report TS 102 080, except for higher power
Line interface
Headquarters: AO/DI, unlike standard ISDN, actually makes consumption when emergency power is provided to the POTS port.
Line codes 2B1Q or 4B3T three communications channels available to
Ancona 60020 - Italy
Standard compliance TS 102 080 the user. If, for example, both B-Channels are
Via Matteo Ricci, 10 bonded for a data session, and an incoming
Power consumption max 1.4 W SYSTEM OPERATION
Range up to 1kΩ (V remote supply > 90Vdc) Telephone: +39.071.218981 call is received, one of the B-Channels is
Fax: +39.071.887077 automatically freed up for the telephone call.
RS232 port If a fax call also comes in, the remaining B- LEDS
Video: +39.071.2189701/2/3/4 FEATURE SUMMARY Malicious Call Identification (MCID).
Channel may be allocated to the fax call. The The following status monitoring LEDs are located near the front panel:
Control circuits TXD,RXD,RTS,CTS,DSR,DTR,DCD
data session continues on the D-Channel AO/DI PWR A.C. power supplied
Data rate up to 230.4 kbit/s Offices: STANDARD NT1
until a B-Channel is available, if needed. AO/DI allows the user to maintain a conti- U Line interface connected
Access protocol PPP, internal async to sync converter, V120, V110 Turin, Milan, Venice, Bologna, - 2-wire interface on the U reference point.
Dialling mode Hayes® AT command set - 4-wire user bus on the S/T reference nuos connection without continuously tying DTR Data Terminal Ready (C108)
Rome, Naples, Palermo, TELEPHONY SERVICES up a circuit. In its Dynamic ISDN aspect, DCD Line status or Carrier detect (C109)
When connecting to the ISDN over a NT-IP, point.
POTS interfaces Miami, Dubai, Beijing, AO/DI allows the B-Channels, and thus the CTS Clear to Send (C106)
subscribers deploy ISDN basic telephony ser- circuit-switched network and connected
Dialling mode DTMF, pulse Santiago, Lima, Paris POTS INTERFACES TD Transmit Data (C103)
vices without any need to purchase additio- hardware, to be dynamically allocated to
Impedance 600Ω or complex (optional) nal equipment (digital phones and/or termi- Electrical: RD Receive Data (C104)
- PCM speech coder/decoder, according to end users only as actually needed. B1 Channel B1 status
Speech quality Q.552 nal adapters), and can keep using standard
No load voltage < 60 V devices, such as standard phone sets, cord- G.711, A-law. B2 Channel B1 status
- Pulse and/or tone dialling, metering RS232 PORT
d.c. load from 0 to 800Ω less phones, analogue modems, group 3 fax - PPP asynchronous to synchronous con-
machines, automatic answering machines, pulse generation. SWITCHES
Ringing Generator - One port available in emergency condi- version
analogue micro PBX’s etc. - Enhanced AT command set. On the bottom side of the device two dip switches are available to:
The NT-IP also supports a range of supple- tions (mains off).
Ringing Voltage > 40 V / 2kΩ - Local tone generation (dial tone, conge- - Handling of control signals (DTR, DSR, - select the So bus configuration (short passive/extended)
Ringing load approx. 3 REN mentary telephony services (call hold, call CTS, etc.). - include terminating resistors for the So bus (100 Ω/ off)
waiting, 3-party conferencing, call forwar- stion and call waiting) is provided when
Frequency 25 Hz, asymmetrical required. - Implicit rate adaption via the HDLC fra- All other settings are made via configuration procedures.
ding, etc.). ming.
Max distortion 10% - Register recall or hook-flash keys are
Reference Standard for Environmental Quality DIAL-UP DATA SERVICES also supported to invoke supplementary
services. Other major features of the RS-232 port
A fully digital data service is provided by the include:
Safety EN60950 (oct. 96) NT-IP straight to the COM port of a PC with - To allow operation with a wide range of
EMC and protections ETS 300 047, ETS 300 386-2-2 terminal, the NT-IP features high on- - Selectable hardware (CTS) or software
unrivalled performance compared to analo- (X-on, X-off) flow control.
Transport ETS 300 019-1-1 class 1.2 gue modems, including sub-second call hook battery voltage and high voltage
Storage ETS 300 019-1-2 class 2.2 ringing even on heavy ringer loads (~3 One directory number (DN) can be alloca- To other
setup times and a virtually error free data ted for the RS232 port.
Operation ETS 300 019-1-3 class 3.2 REN’s). Internet S-BUS devices
channel to the service provider at a guaran- - Internet Access on a single B-channel or
Overvoltages protection exceeds ITU-T K21 teed bit rate. No additional hardware or Additional functions can be provided Service Provider
according to customer specifications. on both B-channels using the multilink
software need to be installed to operate the PPP (MP) protocol S-BUS
Mechanical service.
STANDARD SUPPLEMENTARY SERVICES - Always on /Dynamic ISDN (AO/DI)
Dimensions 180x140x45 mm. - Bandwidth on Demand (BOD)
NATIVE ISDN SERVICES FOR THE POTS INTERFACES
Weight 455 gr. - The POTS ports of the NT-IP support the - Bandwidth Allocation Protocol and
Additionally, subscribers connect native ISDN Bandwidth Allocation Control Protocol U POWER S S RS 232
Power Supply terminals, such as videophony terminals, group Multiple Subscriber Numbers (MSN), the Promary
1 2
Calling Line Identification Presentation (BAP/BACP)
4 fax machines, etc., directly on the S-bus. - Peer to peer communication according to Rate
Current <100 mA (CLIP), Connected Line Identification Access
Voltage 90÷250 Vac, 50÷60 Hz Presentation (COLP) supplementary ser- ITU-T V.120 or V.110 recommendations a/b
OPERATOR ADVANTAGES - Enhanced AT command
Being an integrated access device, the NT-IP vices.
Operating System Requirements - Automatic bit rate recognition up to
Design: Uttinacci & Turano - Roma
offers the telecom operators simplified provi- 230,4 kb/s U RS232 a/b
Windows 95, 98, 98 SE, ME, 2000, NT4, Linux, Macintosh sioning and installation. ADDITIONAL SUPPLEMENTARY SERVICES ISDN
The NT-IP fully supports remote monitoring, - The NT-IP supports supplementary servi-
CONNECTIONS ces based on stimulus procedures. PPP OPERATION
configuration, maintenance, and firmware - Single link PPP
upgrade: operators can therefore offer their - Particularly, the following ETSI functional
So bus Two modular RJ-45 ISO8877 connectors (8p/4c) protocol services are supported: Call - Multilink PPP
customers a faster maintenance service at a - Call Bumping
Aethra - Ancona lower cost by limiting the number of on-site Hold (CH), Call Waiting (CW), Advice of
POTS Two modular RJ-11 connectors (6p/2c) - Bandwidth On Demand
ISO9001 Certified interventions. Charge (AOC), 3-Pty Conference (3-PTY),
2-pole spring terminal Calling Line Identification Restriction - The Bandwidth Allocation Protocol
RS232 port DB-9 connector (CLIR) , Explicit Call Transfer (ECT) and - Always On/Dynamic ISDN
Line pair (U) 2-pole screw terminal or RJ-45 Code 071063001GB Rev.0 (03/01)
Power supply Plug (external feeder)
This document contains preliminary information subject to change without notice.
© Copyright Aethra Telecomunicazioni Srl 1998.