Synway SHT-2B/USB User manual
Synway
CTI
Series
SHT-2B/USB
SHT-4B/USB
USB Voice Box
Version 1.0
Synway Information Engineering Co., Ltd
www.synway.net
Synway Information Engineering Co., Ltd
Contents
Contents .................................................................................................. i
Copyright Declaration........................................................................... ii
Revision History ................................................................................... iii
Chapter 1 Overview............................................................................... 1
1.1 Functions.........................................................................................................1
1.2 Features..........................................................................................................2
1.3 Operation Principle..........................................................................................3
Chapter 2 Installation ............................................................................ 4
2.1 External Structure............................................................................................4
2.2 Label Description ............................................................................................5
2.3 System Requirements.....................................................................................5
2.4 Installation Procedure .....................................................................................5
Appendix A Technical Specifications .................................................. 8
Appendix B Technical/sales Support................................................... 9
SHT-2B/USB, SHT-4B/USB Hardware Manual (Version 1.0) Page i
Synway Information Engineering Co., Ltd
Copyright Declaration
All rights reserved; no part of this document may be reproduced or transmitted in any form or by
any means, electronic or mechanical, without prior written permission from Synway Information
Engineering Co., Ltd (hereinafter referred to as ‘Synway’).
Synway reserves all rights to modify this document without prior notice. Please contact Synway for
the latest version of this document before placing an order.
Synway has made every effort to ensure the accuracy of this document but does not guarantee
the absence of errors. Moreover, Synway assumes no responsibility in obtaining permission and
authorization of any third party patent, copyright or product involved in relation to the use of this
document.
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Synway Information Engineering Co., Ltd
Chapter 1 Overview
The CTI series SHT-2B/USB and SHT-4B/USB are the voice boxes using analog telephone lines
and USB1.1 interface. With various functional modules configured in a different way, they can
work as virtual, station or trunk phones to accept incoming calls.
1.1 Functions
zEquipped with an audio amplifier, a speaker (able to simulate ringing) and an audio
output port to directly drive the speaker in headset or phone handset.
zDetects the ringing current on the trunk channel, the pickup/hangup behavior on the
station channel, the phone line voltage and the polarity reversal. Transmits the ringing
current.
zThe trunk and station channels are connected directly during power outage, which
improves the system security to a great extent.
zAutomatically checks the USB voice box to determine the model and number of modules
installed on it.
zUses SPECDial - a professional driver algorithm - to perform a complete automatic dial
process through analog lines, accurately identify called-party statuses and precisely
determine whether the answering is from the subscriber, the answering machine or the
fax machine.
zCalling party info (Caller ID) detection/transmission, DTMF and FSK support; adopts the
echo cancellation algorithm conforming to the telecom standard; supports the Barge-in
feature for IP phone application and speech recognition.
zSupports signal modulation and demodulation, enabling communication of FSK signals
with such information terminals as PDA and information phones.
zSupports simultaneous full-duplex recording and playback on 4 channels, each with a
different format (CCITT A/μ-Law 64kbps or IMA ADPCM 32kbps)
zProgrammable tone analyzer detects all kinds of tones on analog channels
zAutomatic Gain Control (AGC) support in recording operation
zAdaptive echo cancellation
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1.2 Features
zUSB1.1 Bus Support
Includes USB1.1 bus; supports hot-swap and PNP (plug and play) features; provides
portable application and easy installation without the need for any external power supply
when it serves as a virtual phone or uses trunk channels.
zModule Configurable
4 on-channel modules can be freely arranged in pairs or groups for various complex,
multi-functional applications, such as call center and recording functions available on a
single USB voice box.
zAvailable Analog Phone Line Jack
Adopts the RJ11 jack to connect the phone line directly, eliminating the need for extra
junction boxes, making connection easy and malfunctions rare.
zAvailable Audio Output Jack
Equipped with an audio amplifier to directly drive the speaker of the headset or phone
handset.
zProgrammable Tone Detector
Detects single or dual tones at any frequency, offering facility for use with a variety of
PBXes and key telephone systems
zRealtime Analog Line Voltage Detection
Determines whether the phone line is broken and judges the pickup/hangup behavior of
the phone on a same line.
zPolarity Reversal Detection
Includes the API interface to detect the polarity of the analog phone line.
zVarious CODECs Support
Offers a large selection of voice CODECs, including G711 A-Law, μ-Law, Linear PCM,
IMA-ADPCM, MP3 and VOX.
zSupports WAV File
The recorded voice files can be edited and played by audio tools such as Cooledit.
zHardware Serial Number & Authorization Code Identification Circuit
Each voice box has a unique hardware serial number and an authorization code
identification circuit, designed for software safety. Users can apply to our company for an
exclusive authorization code.
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zSynway’s Unified SynCTI Driver Development Platform
Synway owns the intellectual property rights for the unified high-intelligence SynCTI
driver development platform. Each system supports up to 2048 channels. All features are
available via simple function calls on the driver platform, without having to understand
complex call procedures.
1.3 Operation Principle
Host Computer Interface (USB)
AGC
DTMF
/Tone
Generator
Echo
Cancellation
Encoder
BargeIn
Detector DTMF
Detector Tone
Detector Energ
y
Detector Decoder
FS
K
Receiver
AGC
Outbound Voice
Inbound
Voice
TDM Bus Switch
∑
Switch and Conference
Playback to bus
Playback
Data Buffe
r
FS
K
Generator
Mother Board
Phone interface
Voltage
/ Ring
Detector
Hook
Switch
Subscriber
Line
Interface
Circuit
Hook
Detector
Ring
Control
Codec
Audio Jack
Trunk
Board Subscribe
r
Board
Amp
Channel 0 onl
y
∑
AGC
∑
Analog
Phone
Interface
Circuit
Figure 1-1 Operation Principle
∑
Recording
Data Buffe
r
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Chapter 2 Installation
2.1 External Structure
zSHT-2B/USB or SHT-4B/USB
LED
LED: On - Power on; Off - Power off; Flashing - Operating normally
-48V/RING: Jack to the ringing current and battery feed power supply
LINE1: Jack to the 1st channel
LINE2: Jack to the 2nd channel
LINE3: Jack to the 3rd channel
LINE4: Jack to the 4th channel
HANDSET: Phone handset jack
SPK: Audio output jack, which is a Φ3.5 stereo jack
MIC: Microphone input jack, which is a Φ3.5 stereo jack
USB: USB jack
Notes:
①
SHT-2B/USB doesn’t include LINE3 and LINE4;
②
Because MIC, LINE1 and the handset microphone are connected in parallel, only one of
them could be used at a time;
③
HANDSET and SPK are connected in parallel. That means audio signals are output from
these two jacks synchronously;
④
Outgoing voices from the 1st channel, including those being played and those down from
LINE4 LINE3 SPK USB
LINE2 LINE1
Figure 2-1 Outside View
-48/RING
M
I
C
H
ANDSE
T
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the bus, will be output through SPK;
⑤
When MIC or the microphone of HANDSET is used for recording, the 1st channel must be
set to a ‘Microphone Recording Channel’;
⑥
The minimum interval between insertion and extraction of the USB data line should not be
shorter than 9S.
2.2 Label Description
There are three channel types ‘handset (headset)’, ‘trunk’ and ‘station’ which respectively indicate
the microphone recording channel, the trunk channel and the station channel. The serial number is
denoted by Arabic figures and each product has a unique serial number.
2.3 System Requirements
To ensure the proper operation of the USB voice box, the computer hardware and software
configurations must meet the following requirements:
zHost System Requirements
CPU: 300 MHz Intel® Pentium® II or above
RAM: Each USB voice box needs at least 1 MByte RAM
HD: At least 1Gbyte remaining disk space
Interface: Each USB voice box needs a USB interface
zSupported Operating Systems
Refer to SynCTI Programmer’s Manual.pdf.
2.4 Installation Procedure
Step 1: Connect to analog phone line
Refer to Figure 2-3 below for interface signal definitions to avoid improper connection.
SHT-2B/USB
Ch1：***
Ch2：***
SN:******
Serial Number
Model and
Channel Type
SHT-4B/USB
Ch1：***
Ch2：***
Ch3：***
Ch4：***
Model and
Channel Type
SN:****** Serial Number
Figure 2-2 Labels for SHT-2B/USB and SHT-4B/USB
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Step 2: Connect to the headset or the phone handset
When the 1st channel is configured to be the ‘handset (headset)’ channel, the headset or handset
can be used to implement the feature of ‘virtual phone’. The installation is shown in Figure 2-4.
Hint: Skip Step 4 if the headset is installed in this step.
Notes:
①
Do not connect the analog phone line to the ‘Handset (Headset)’ channel;
②
When implementing the feature of ‘virtual phone’, you may use the embedded speaker in
the USB voice box or the headset to make rings, but still need application software to
support the dialing and the pickup/hangup control. For more details, refer to ‘SynCTI
Programmer’s Manual’.
Step 3: Connect to the ringing current & battery feed power supply
Skip this step if there is no station channel.
Note:
The ringing current and battery feed power supply is also required to be connected when trunk
LINE1 1 NC
2 Ring1
3 Tip1
4 NC
1
2
3
4
Fi
g
ure 2-3 Interface Si
g
nal Definitions
1
2
3
4
LINE2 1 NC
2 Ring2
3 Tip2
4 NC
LINE3 1 NC
2 Ring3
3 Tip3
4 NC
1
2
3
4
1
2
3
4
LINE4 1 NC
2 Ring4
3 Tip4
4 NC
Handset (headset)
1 Microphone1-
2 Speaker+
3 Speaker-
4 Microphone1+
HANDSET
1 2 3 4
Headset Jack Microphone Jack
Figure 2-4 Connection of Microphone and Handset
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channels and station channels are used at a same time. It has no effect on trunk channels.
Step 4: Connect the sound box or other appropriate sound devices
Skip this step if there is no need to ‘monitor in real time’ or ‘play’, or the headset/handset has been
installed in Step 2.
Regarding how to choose proper sound devices, refer to ‘Input/output Interface’ and ‘Audio
Specifications’ in Appendix A Technical Specifications.
Step 5: Connect the USB voice box and the PC by USB data lines (See Figure 2-5)
Note: The USB voice box is not allowed to share the same USB port on the PC with other USB
devices.
Step 6: Install the driver
If it’s the first time to install the USB voice box on the PC, please run the installation program in the
driver installation package before Step 5; otherwise, the driver will be installed by the operating
system automatically. Regarding driver installation, refer to SynCti_InstManual.pdf.
Note: If the installation error occurs, remove the USB data line from the PC. Plug it and install the
driver again.
Key Tips:
To: PC To: SHT-2B/USB or SHT-4B/USB
Fi
g
ure 2-5 USB Data Line
zAs the system is expected to run for long hours unmannedly, ‘energy-saving’ mode
should be turned off for both the CPU and the HD in CMOS or WINDOWS operating
system. This is to ensure full-speed operation of the computer, or it may lead to a drop in
performance or unexpected errors after running for some time.
zA chassis installed with the USB voice box must be grounded for safety reasons,
according to standard industry requirements. A simple way is earthing with the third pin
on the plug. No or improper grounding may cause instability in operation as well as
decrease in lightning resistance.
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Appendix A Technical Specifications
Dimensions
170 x 130 x 20mm3
Weight
≈
200g (exclusive of ringing current & battery
feed power supply)
Environment
Operating temperature: 0
℃
—55
℃
Storage temperature: -20
℃
—85
℃
Humidity: 8%—80%, non-condensing
Input/output Interface
Headset jack: One φ3.5 stereo jack
Telephone line jack: Four 4-pin RJ11 connectors
USB jack: One USB1.1 standard interface
Audio Specifications
CODEC: CCIIT A/μ-Law 64kbps,
IMA ADPCM 32kbp
Audio output power: ≥50mW
Distortion: ≤3%
Frequency response:300-3400Hz (±3dB)
Signal-to-noise ratio: ≥38dB
Echo suppression: ≥40dB
Maximum System Capacity
Up to 8 USB voice boxes concurrently per
system; up to 4 channels per box
。
Audio Encoding & Decoding
16Bit PCM 128kbps
8Bit PCM 64kbps
A-Law 64kbps
µ-Law 64kbps
VOX 32kbps
ADPCM 32kbps
GSM 13.6kbps
MP3 8kbps
Impedance
Insulation resistance for PC isolation from
telephone line: ≥2MΩ/500V DC
Telephone line impedance:
Compliant with the national standard
impedance for three-component network
Power Requirements
+5V DC: ≤400mA
Power: ≤2.1W
Safety:
Lightning resistance: Level 4
Safety certificates: FCC;CE
Maximum Subscriber Line Length for
Station Channel
5.5km
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Synway Information Engineering Co., Ltd
Appendix B Technical/sales Support
Thank you for choosing Synway. Please contact us should you have any
inquiry regarding our products. We shall do our best to help you.
Headquarters
Synway Information Engineering Co., Ltd
http://www.synway.net/
9F, Synway D&R Center, No.3756, Nanhuan Road, Binjiang District,
Hangzhou, P.R.China, 310053
Tel: +86-571-88860561
Fax: +86-571-88850923
Technical Support
Tel: +86-571-88864579
Mobile: +86-13735549651
Email: [email protected]
Email: techsupport@synway.net
Sales Department
Tel: +86-571-88860561
Tel: +86-571-88864579
Fax: +86-571-88850923
Email: sales@synway.net
SHT-2B/USB, SHT-4B/USB Hardware Manual (Version 1.0) Page 9
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