Synway Information Engineering Co., Ltd
Chapter 1 Overview
TEJ100P(SSW), TEJ101P(SSW), TEJ200P(SSW), TEJ201P(SSW), TEJ400P(SSW),
TEJ401P(SSW), TEJ800P(SSW) and TEJ801P(SSW) are earmarked for Synway intelligent
switch. They are digital trunk interface boards which support E1, T1 and J1 environments,
all perform echo cancellation by on-board DSPs. The enhanced capability 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 cost-effective.
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 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.
Figure 1-1 Application Model I: Traditional Telephony System
Legacy Phones
Legacy
PBX
PBX
TEJXXX(SSW)
T1
Internet
Remote offices
Special-for-Switch TEJ Digital Trunk Interface Boards Hardware Manual
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