Synway Information Engineering Co., Ltd
Chapter 1 Overveiw
The Synway TEJ series (hereinafter referred to as ‘TEJ’) are high-performance, cost-effective
digital telephony interface boards and support E1, T1 and J1 environments. The environments are
selectable on a per-board basis via software configuration. The TEJ boards improve I/O speed by
using DMA technique for data reading and writing on the basis of PCI bus, resulting in reduced
CPU usage and increased board density per server. They provide the power to interconnect
traditional telephony systems with emerging Voice-over IP (VoIP) technologies.
Compared with other products in Synway AST series, the TEJ board has high integration. It is
integrated with the capability of 64ms echo cancellation, eliminating the need of getting supports
from extra modules or devices, bringing an obviously better effect of echo cancellation than other
subseries in AST.
The excellent combination of the TEJ driver and the Asterisk platform brings the following features
to the TEJ series boards.
Supported Data Modes: Cisco HDLC, HDLC, PPP, Multi-link PPP, Frame Relay.
Supported Voice Modes:
PRI CPE and PRI NET
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NI1
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NI2
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EuroISDN
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4ESS(AT&T)
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5ESS(Lucent)
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DMS100
E&M
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Wink
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Feature Group B
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Featrue Group D
FXO and FXS
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Ground Start
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Loop Start
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Loop Start with Disconnect Detect
The TEJ series connect Asterisk Server with PSTN, Channel Bank or PBX via T1 or E1 interface.
The boards and the corresponding drivers can be used to establish a professional telephony
network environment. Figure 1-1 and Figure 1-2 below are typical application models with TEJ.
Synway TEJ Series Hardware Manual
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Version 1.0
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