Synway AST Series User manual

Synway AST Series
TEJ400E/TEJ401E
TEJ800E/TEJ801E
Digital Trunk Interface Board
Version 1.0
Synway Information Engineering Co., Ltd
www.synway.net

Synway Information Engineering Co., Ltd
Synway TEJ400E/TEJ401E, TEJ800E/TEJ801E Hardware Manual (Version 1.0) Page i
Contents
Contents.........................................................................................................................................i
Copyright Declaration..................................................................................................................ii
Revision History..........................................................................................................................iii
Chapter 1 Overview ......................................................................................................................1
1.1 Features .............................................................................................................................2
1.2 Operation Principle.............................................................................................................3
Chapter 2 Installation ...................................................................................................................4
2.1 Hardware Structure ............................................................................................................4
2.2 Interface Identification ........................................................................................................5
2.3 Slot Compatibility................................................................................................................6
2.4 System Requirements ........................................................................................................7
2.5 Hardware Installation..........................................................................................................7
Appendix A Technical Specifications .......................................................................................11
Appendix B Technical/Sales Support .......................................................................................12

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Copyright Declaration
This manual is provided by Synway Information Engineering Co., Ltd (hereinafter referred to as
‘Synway’) as the support file for ‘Synway TEJ Series board driver software’. Both the software and
this manual are copyrighted and protected by the laws of the People's Republic of China.
All rights reserved; no part of this manual may be extracted, modified, copied, reproduced or
transmitted in any form or by any means, electronic or mechanical, without prior written permission
from Synway. By using this manual, you agree to the following Software License Agreement.
Synway reserves the right to revise this manual without prior note. Please contact Synway for the
latest version of this manual before placing an order.
Synway has made every effort to ensure the accuracy of this manual 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
manual.
Note: Asterisk and Digium mentioned in this book are registered trademarks of Digium Inc.

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Revision History
Version Date Comments
Version 1.0 2010-5 Initial publication.
Note: Only major revisions to this manual itself recorded herein.

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Chapter 1 Overview
The Synway TEJ400E, TEJ800E, TEJ401E and TEJ801E are digital trunk interface boards which
support E1, T1 and J1 environments. They are in 2U size, 120mm in length, compact in structure
and high in integration. They all include PCIe bus, designed especially for various application
systems that require high performance.
They all perform echo cancellation by on-board DSPs. The enhanced capability of TEJ401E,
TEJ801E in echo cancellation reaches 128ms for time delay estimation, which ensures
high-quality voice talk without extra modules or devices to support echo cancellation. They are
absolutely cost-effective. The design of on-board EMC and lightning-proof circuits further
guarantees the security in use.
These boards are completely compatible with Asterisk in hardware and support smooth
connection to Asterisk platform. Therefore they have a lot of advanced call features.
Supported Data Modes: Cisco HDLC, HDLC, PPP, Multi-link PPP, Frame Relay.
Supported Voice Modes:
PRI CPE and PRI NET
—NI1
—NI2
—EuroISDN
—4ESS(AT&T)
—5ESS(Lucent)
—DMS100
E&M
—Wink
—Feature Group B
—Feature Group D
FXO and FXS
—Ground Start
—Loop Start
—Loop Start with Disconnect Detect
These boards connect the Asterisk server with PSTN, Channel Bank or PBX via T1, E1 or J1
interface to build a specialized telephony network environment. Figure 1-1 and Figure 1-2 below
are typical application models with these boards.

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1.1 Features
Figure 1-1 Application Model I: Traditional Telephony System
Figure 1-2 Application Model II: VoIP Telephony System
zPCIe Bus Support
Includes PCIe bus; supports PCI Express X1, X4, X8, X16 slots and the PNP (plug and play)
feature.
zDMA Read and Write
The use of DMA technique for data reading and writing helps minimize the cost of the host
CPU.
zCompatible with Asterisk
Entirely compatible with Asterisk in hardware, with all source codes open.
zRJ48C Jack
The TEJ400E, TEJ800E, TEJ401E, TEJ801E boards all have four RJ48C jacks. TEJ400E
and TEJ401E have common RJ48C jacks which can either connect directly with digital
trunks or convert to BNC connectors via a proper adapter, while TEJ800E and TEJ801E
have special RJ48C jacks (RJ48C/M) each of which can convert to two common RJ48C
jacks via a two-way hub, making connection easy and malfunctions rare.
zEcho Cancellation
A
ster
i
s
k
S
erve
r
TEJXXX T1
Legacy Phones
Legacy
PBX
R
emote o
ffi
ces
Internet
Note: TEJXXX in Figure 1-1 and Figure 1-2 represent available TEJ series boards
CLEC
A
ster
i
s
k
S
erve
r
TEJXXX
IP Phones
LAN
T1
Switch

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1.2
The echo cancellers that Synway developed for these boards use on-board DSPs to work.
TEJ401E and TEJ801E support up to 128ms for time delay estimation per channel, while
TEJ400E and TEJ800E support 32ms, really cost-effective. It not only cancels out the
effect of voice playback on DTMF and busy tones detection, but also avoids self-excited
oscillation and howling, and minimizes the possibility of registering wrong DTMF and busy
tones in a conference call, designed especially for VoIP application environments.
zVoice CODEC Support
Supports A-law, μ-law codecs.
zClock Sync Support
Supports input and output of CT clock, allowing clock synchronization with multiple boards.
zEMC & Lightning-proof Circuits Available
Operation Principle
Figure 1-3 Operation Principle
Inbound PCM Data
Mother Board
Echo
Outbound PCM Data
PCM Interface
Recording Playback
Host Computer Interface (PCIe)

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Chapter 2
2.1
z
Installation
Hardware Structure
TEJ800E/TEJ801E Board
Figure 2-1 Left and Front Views
Clock Sync Interface
PCIe Interface
PCM0
PCM4
PCM1
PCM5
PCM2
PCM6
PCM3
PCM7
RJ48C/M
LED1
LED5
LED2
LED6
LED3
LED7
LED4
LED8

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Figure 2-2 Rear View
Notes:
1) PCM0~PCM7 in
Figure 2-1 above are 8 transmit/receive interfaces to trunks.
2) LED1~ LED8 are indicators for PCM0~PCM7. They have three states as listed below.
○
1 On: PCM synchronous; ○ 2 Flashing: PCM not synchronous; ○ 3 Off: Port unused
3) INm and OUTm respectively indicate the grounding jumpers at the receive and transmit ends
of PCM(m-1), m＝1～8. With regard to the configuration of grounding jumpers, refer to Step 1
in Section 2.5 Hardware Installation.
4) JP12 is an interface to the clock sync line.
5) Except for the number of transmit/receive interfaces to trunks, the TEJ400E/401E board is
almost the same as TEJ800E/801E in appearance. The picture is only for reference, please
make the object as the standard.
2.2 Interface Identification
TEJ400E and TEJ401E adopt common RJ48C jacks. See Table 2-1 below for the pin layout of a
standard RJ48C.
Connect to grounding
jumpers at transmit end
Connect to grounding
jumpers at receive end

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Pin Note
1 RRing
2 RTip
3 Not used
4 TRing
5 TTip
6 Not used
7 Not used
8 Not used
Pin8
Pin1
Table 2-1 Common RJ48C
TEJ800E and TEJ801E adopt special RJ48C jacks which we call RJ48C/M. See Table 2-2 below
for the pin layout of an RJ48C/M.
Pin Note
1 Rring1
Synway TEJ400E/TEJ401E, TEJ800E/TEJ801E Hardware Manual (Version 1.0) Page 6
2 RTip1
3 Tring2
4 Tring1
5 Ttip1
6 Ttip2
Pin8
Pin1
7 Rring2
8 RTip2
Table 2-2 RJ48C/M
2.3 Slot Compatibility
Make sure them compatible with PCI or PCIe slots when using these boards. Users may choose
whichever suitable according to the slot patterns illustrated in Figure 2-3 below.
Slots
3
2
1
0
4
5
6
7

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2.4
Figure 2-3 PC Slots
Slot Number:
0: AGP Pro slot
1: 64-bit 5.0V PCI slot
2: 64-bit 3.3V PCI slot
3: 32-bit 5.0V PCI slot
4: PCI-Express x1slot
5: PCI-Express x8 slot
6: PCI-Express x4 slot
7: PCI-Express x16 slot
TEJXXP boards support the slots numbered 1, 2, 3 (i.e. PCI slots) in Figure 2-3; TEJXXE boards
support the slots numbered 4, 5, 6, 7 (i.e. PCIe slots) in Figure 2-3 and the PNP (plug and play)
feature.
System Requirements
Host System Requirements
CPU: 800MHz Intel® Pentium®III or above
Memory: 64M or more
HD: Depends on individual requirements
Supported Operating Systems
Linux: Debian, Fedora, Rad Hat
2.5 Hardware Installation
Note: Always turn off the power before installation!
Step 1: Configure the grounding jumper.
To use 100ΩT1, 110ΩJ1 or 120ΩE1 balanced twisted-pair cable, disconnect all grounding
jumpers.
In consideration of various line conditions, this series boards are equipped with two groups of
grounding jumpers on each channel which respectively control the groundings of the transmitting
and receiving ends. In case the 75ΩE1 unbalanced coaxial cable is used, the grounding jumpers
at the receiving end should be disconnected while those at the transmitting end should be
short-circuited, provided that the PC is properly grounded. This configuration is the factory default
setting and applicable to most situations so that there is usually no need to change it. If it is difficult
to ground the local PC, you may short-circuit the on-board grounding jumper at the receiving end
and use the transmitting end at the opposite terminal for grounding. If the receiving end at the
opposite terminal is grounded (improper operation), the on-board grounding jumper at the

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transmitting end must be disconnected. Refer to Table 2-3 for details.
Transmit
End grounded grounded non-grounded non-grounded
Opposite
Terminal
Local
Terminal Receive
End non-grounded grounded non-grounded grounded
Transmit
End short-circuited disconnected short-circuited disconnected
PC grounded
Receive
End disconnected disconnected short-circuited short-circuited
Transmit
End short-circuited short-circuited short-circuited
PC not
grounded Receive
End short-circuited disconnected
manage to
make the PC
grounded short-circuited
Table 2-3Generally speaking, even in the case of proper grounding at both terminals, only the
external layer of the E1 coaxial cable at the transmitting end is allowed to be grounded. The
grounding of both transmitting and receiving ends may result in a current loop with ground wires,
bringing instability to signals. Therefore, such grounding must be strictly avoided.
Transmit
End grounded grounded non-grounded non-grounded
Opposite
Terminal
Local
Terminal Receive
End non-grounded grounded non-grounded grounded
Transmit
End short-circuited disconnected short-circuited disconnected
PC grounded
Receive
End disconnected disconnected short-circuited short-circuited
Transmit
End short-circuited short-circuited short-circuited
PC not
grounded Receive
End short-circuited disconnected
manage to
make the PC
grounded short-circuited
Table 2-3 Configuration of Grounding Jumpers for Use of 75ΩE1 Unbalanced Coaxial Cable
Step 2: Properly fit the board onto the PC chassis.

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It is suggested to fix the L-brackets on the board with screws before going to the next step.
Step 3: Connect to digital trunks.
A TEJ800E or TEJ801E board provides 4 RJ48C/M jacks, each of which in use should be
converted to 2 common RJ48C jacks via a two-way hub as shown in Figure 2-4 below. Each
common RJ48C can either connect directly with digital trunks or convert to 2 BNC connectors via
an RJ48C-to-BNC adapter. See Figure 2-5.
Figure 2-4 Two-way Hub for RJ48C/M
Figure 2-5 RJ48C-to-BNC Adapter
A TEJ400E or TEJ401E board provides 4 common RJ48C jacks, each of which can either connect
directly with digital trunks or convert to 2 BNC connectors via an RJ48C-to-BNC adapter. See
Figure 2-5 above.
Step 4: Set up an application environment.
Connect digital trunks with the on-board RJ48C jack to establish an application environment.
Step 5: Connect the clock sync line.
Note: Skip this step if there is no need of clock synchronization with multiple boards.
The on-board clock sync line is used to connect with other boards, such as digital trunk boards,
analog boards from Synway or even boards from other companies, to offer a same clock to all
boards connected together. This can reduce the error in faxing and guarantee the accuracy in data
transmission between boards.
See Figure 2-6 below for the clock sync line provided by Synway.

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Figure 2-6 Clock Sync Line
Step 6: Boot your computer and install the driver.
Regarding driver installation, refer to the file ‘SynAST UserManual.doc’ for details.

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Appendix A Technical Specifications
Dimensions
120×64mm2(excluding L-bracket)
Weight
≤120g
Environment
Operating temperature: 0
℃ —50 ℃
Storage temperature: -20
℃ —75 ℃
Humidity: 10%—90% non-condensing
Storage humidity: 10%—90%
non-condensing
Input/output Interface
Digital trunk interface:
TEJ400E/TEJ401E: 4 RJ48C jacks
TEJ800E/TEJ801E: 4 RJ48C/M jacks
E1 interface:
Compliant with G.703, including 75Ω
unbalanced interface and 120Ωbalanced
interface
T1/J1 interface:
DSX-1 and CSU line build-outs available
for different extents of signal losses,
including 100Ωand 110Ωbalanced
interfaces
Audio Specifications
CODEC: CCITT A/µ-Law 64kbps
Distortion: ≤3%
Frequency response: 300-3400Hz (±3dB)
Signal-to-noise ratio: ≥38dB
Echo suppression: ≥40dB
Maximum System Capacity
Depends on the system consumption of
Asterisk and the processing capability of
computer.
Power Requirements
+3.3V DC:
≈1800mA
Maximum power consumption: ≤6.5W
Audio Encoding & Decoding
A-Law 64kbps
μ-Law 64kbps
Sampling Rate
8kHz
Safety
Lightning resistance: Level 4

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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. However, our technicians
and salesmen are mainly responsible for maintaining our boards and providing
relative technical support. If there are problems about Asterisk, please keep touch
with Digium Inc. for help.
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: [phone]
Fax: [phone]
Technical Support
Tel: [phone]
Mobile: [phone]
Email: [email protected]
Email: [e-mail]
MSN: [email protected]
Sales Department
Tel: [phone]
Tel: [phone]
Fax: [phone]
Email: [e-mail]