Comtrend’s FM-60 is a flexible transmission system, which provides voice and data applications by time division multiplexing and demultiplexing on 2.048 Mbps E1 signals. Timeslot interchange technique is applied to provide timeslot assignment and timeslot interchange capability, so that any 64 Kbps or Nx64 Kbps user-signal can be assigned and cross-connected to any E1 timeslot.

The CT-210 MSDSL NTU enables symmetric transmission over a single twisted pair of telephone lines. Based on 2B1Q line coding, the CT-210 supports multiple transmission rates ranging from 144 Kbps to 2,320 Kbps. Line rates can be user configured or rate-adapted to line condition.

The CT-210 provides industry standard V.35 interface it is suitable for leased line applications such as video conferencing, Internet access, and digital data network (DDN) access, etc

CT-128, a desktop Multiple Rate IDSL NTU, combines the Network Terminating Unit (NTU) with the multi-rate Data Service Unit (DSU) in one small delicate enclosure. It can transport data at speeds of up to 128 Kbps, full duplex, over an ordinary 2-wire telephone line. This high bandwidth availability is made possible using the ISDN U-Interface 2B1Q line coding technique, an industry standard for digital transmission on metallic facilities.

CT-128 offers flexible applications for asynchronous and synchronous transmission. It supports one data channel operating at speeds from 2.4 Kbps to 128 Kbps.

The SDHL family comprises base-band, synchronous modems, with duplex transmission, in one or two pair of twisted wires and channel separation by echo cancellation The SHDSL (Single-pair High-speed Digital Subscriber Line) modems operate at speeds of Nx64 kbps and comply with the ITU-T 991.2 (G.SHDSL) standard, are used for high speed transmissions, and support a broad range of applications with different interfaces and clocks.

The SDHL family modems are offered in different mechanical standards, from the traditional models with Telebrás mechanics (board to the center and cabinet to the user side), as well as the new compact model (DT SHDSL C), which features advanced design and great installation and configuration facilities.

WireSpan 5100 là SHDSL modem chạy trên 2 đôi cáp đồng, khoảng cách lên đến 7km, tốc độ đến 4Mbps, đặc biệt hỗ trợ 3 giao diện: E1, V.35, Ethernet trên cùng 1 thiết bị, WireSpan 5100 đã được thử nghiệm tương thích với tất cả các loại SHDSL modem thông dụng trên thị trường

ATRIE WIRESPAN 5100 WIRE SPAN 5100 WS5100 WS 5100 modem WIRESPAN modem WIRE SPAN ATRIE WIRESPAN 5100 WIRE SPAN 5100 WS5100 WS 5100 modem WIRESPAN modem WIRE SPAN

Comtrend’s CT-2000 is a flexible multi-service platform, for voice and data applications using time division multiplexing technology. Featuring powerful timeslot interchange (TSI) capability, the CT-2000 can work as a: flexible STM-1/T1/E1 multiplexer, 1/0 digital cross-connect system, rack-mounted CSU/DSU, or T1/E1 converter. The CT-2000 utilizes common interface modules to perform a wide-range of applications, so it can reduce space requirements and inventory costs.

With its high-density interface units, the CT-2000 is excellent for carrier-class deployment. For STM-1 SDH multiplexer application, up to 63 E1 lines can be cross-connected to the STM-1 interface, with direct access to the SDH backbone. For T1/E1 flexible multiplexer application, up to 64 T1/E1 lines can be supported. The versatile tributary interface units provide multiple data and voice services on the same shelf. The interface unit is equipped with remote control capability on CPE devices to achieve full network management.

I-DSL128 (Network Termination Unit) is designed for high speed data communication and internetworking transport services. It utilizes 2B1Q line coding and echo cancellation technique for full duplex and synchronous data transmission over a 2-wire line up to 5.5 Km. I-DSL128 supports power-on self-test and diagnostic capability for optimal speed calibration and trouble shooting. The diagnostic capabilities include Analog loopback, Digital loopback and BER Test. I-DSL128 is elegantly designed and easy to operate. Its front panel is equipped with one 16 x 2 LCD, 4 push-buttons for configuration and 9 LEDs for status indication. The configuration procedure goes through a friendly menu-driven program. I-DSL128 is designed and suitable for providing Remote Access, LAN/WAN interconnection, Host connection, Internet transport etc. meeting high speed data services.

We focus on:

       Solve the problem of user’s ADSL or IPTV service unavailable for long distance to CO

       Solve the existed ADSL user’s off-line problem

       Solve the problem of high uplink rate need of video surveillance based-on existed internet.

Line Powered Extender is an important ancillary device in broadband network construction. It not only extends the range between the DSLAM and CPE from 3.5km to 8km, but also supports POTS business and improves the access rate of bandwidth, resolves the problem of frequent off-line. Actually, it can help ISP swiftly enlarge ADSL broadband services and bring much satisfaction to users. It supplies the basic platform for high bandwidth services and promotes the development of broadband service and brings considerable benefit to ISP.
    Line Powered Extender makes DSLAM near to CPE in advance without using fiber to solve the problem of user’s ADSL or IPTV service unavailable for long distance to CO, solve the existed ADSL user’s low bandwidth and frequent off-line problem and solve the problem of high uplink rate need of video surveillance based on existed internet.

Mở rộng mạng LAN (LAN to LAN)

Khoảng cách 1.9km (cáp 0.4mm) - Tốc độ 5Mbps.
Khoảng cách 1.3km (cáp 0.4mm) - Tốc độ 15Mbps.
Khoảng cách 0.8km (cáp 0.4mm) - Tốc độ 25Mbps.

Rất thích hợp cho khách sạn, nhà xưởng, công ty,... tận dụng đường điện thoại nội bộ có sẵn để triển khai Internet cho từng phòng khách sạn, mở rộng mạng LAN, kết nối giữa các xưởng trong nhà máy....

The SHDSL NTU series (CT-212/CT-213) provides symmetric transmission over a single twisted pair. The CT-212 has a V.35 interface, while the CT-213 have a G.703 E1/T1 interface. Utilizing TC-PAM coding, the CT-212 supports multiple transmission rates of up to 2,320 Kbit/s. In addition to software configurable line rates, the CT-212 also supports rate adaption.

Featuring a powerful remote control capability, the local NTU can perform configuring, PM monitoring, querying, diagnostics and all maintenance functions of a remote NTU via a DSL line. The series are ideally suited to leased line applications such as video conferencing, Internet access, and digital data network (DDN) access.