
Synway Information Engineering Co., Ltd
Chapter 1 Overview
The Synway TEJ101E and TEJ201E are digital trunk interface boards which support E1, T1 and
J1 environments. They are in 2U size, half-length, compact in structure and high in integration.
They use high-performance standard PCIe bus, designed especially for various application
systems that require high performance.
The TEJ101E and TEJ201E boards perform echo cancellation by on-board DSPs. The echo
canceller developed by Synway supports up to 128ms for time delay estimation, which ensures
high-quality voice talking without the help of extra modules or devices for echo cancellation. They
are cost-effective. The design of on-board EMC and lightning-proof circuits further guarantee the
security in use.
These boards are completely compatible with Asterisk at the hardware/driver level 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
The TEJ101E and TEJ201E 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.
Synway TEJ101E/TEJ201E Hardware Manual (Version 1.0) Page 1