DC3445: E3 34Mbps / DS3 45Mbps to HSSI Interface Converter

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The DC3445 provides a new level of price/performance in connecting bridges and routers to E3 34.368Mbps or DS3 44.736Mbps leased lines.

Front: DC3445DC3445 AC rear

E3/DS3 to HSSI Interface Converter

DC3445: E3/DS3 to HSSI Converter

  • Cost Effective E3/DS3 to HSSI interface conversion
  • HSSI port for router connection
  • Switchable E3 34Mbps or DS3 45Mbps G.703 port for leased line connection
  • Easy to install & maintain
  • Integral auto-sensing power supply (100-250V AC or -40V DC versions)
  • 12-24V DC power supply available on request
  • External alarm relay port
  • Compact modem style unit, built to European standards
  • Rack mounting kits for 2 or 18 units available
  • Quad option available with 4 DC3445 units in a 1U box

Router Applications

DC3445 connecting a HSSI router to an E3 34Mbps G.703 leased line

DC3445 connecting a HSSI router to an E3 34Mbps G.703 leased line

This application shows a DC3445 connecting a HSSI router card to an E3 34Mbps G.703 leased line, such as a BT Megastream-34 service. HSSI serial ports are often the most cost effective high speed WAN port available on routers.

HSSI routers connected together via an E3 34Mbps G.703 leased line using DC3445 units

HSSI routers connected together via an E3 34Mbps G.703 leased line using DC3445 units

This application shows a pair of DC3445 units connecting a pair of HSSI routers via an E3 34Mbps G.703 leased line, such as a BT Megastream-34 service. HSSI serial ports are often the most cost effective high speed WAN port available on routers.

DC3445 connecting a HSSI router to an unframed clear channel DS3 45Mbps G.703 leased line

DC3445 connecting a HSSI router to an unframed clear channel DS3 leased line

This application shows a DC3445 connecting a HSSI router card to an unframed clear channel DS3 45Mbps G.703 leased line, such as a BT Megastream-45 service. HSSI serial ports are often the most cost effective high speed WAN port available on routers.

HSSI routers connected together via an unframed clear channel DS3 45Mbps G.703 leased line using DC3445 units

HSSI routers connected together via an unframed clear channel DS3 45Mbps G.703 leased line using DC3445 units

This application shows a pair of DC3445 units connecting a pair of HSSI routers via an unframed clear channel DS3 45Mbps G.703 leased line, such as a BT Megastream-45 service. HSSI serial ports are often the most cost effective high speed WAN port available on routers.

N.B. Care must be taken when using the DC3445 with services which are terminated in North America as the DC3445 requires clear channel DS3 circuits for correct operation.

Higher speed router connectivity to the WAN becoming more common-something to do with the growth of the Internet. Some higher speed routers offer WAN interfaces at E3 and DS3, although these often have additional overhead due to their use of ATM technology.

The DC3445 HSSI to E3 / DS3 converter was developed to offer a simple solution for Routers with a standard HSSI interface, to use a DC3445 to convert to (non-ATM) 34Mbps or 45 Mbps, and then be able to use the full bandwidth of the link (rather than having an ATM conversion overhead) and thereby save money, compared to the cost of the E3 ATM Cisco WAN Interfaces.

The DC3445 spans the gap between the synchronous interface of a bridge or router and an E3 or DS3 leased line.

The DC3445 offers a HSSI Interface and BNC connectors for the E3 or DS3 line interface.

The DC3445 interface speeds and clocking modes are configured simply by setting the dip switches.

The DC3445 can easily be rack mounted in either a 1U two unit rack mount kit, in a 6U eighteen unit rack mount kit or is available as a 1U quad box (which contains 4 x DC3445).

N.B. Care must be taken when using the DC3445 with services which are terminated in North America as the DC3445 requires clear channel DS3 circuits for correct operation.

E3 Line Interface
Port G.703, 75 ohm unbalanced
Interface BNC (75 ohm)
Line Coding HDB3
Bit Rate 34.368 Mbps +/- 20 ppm
Barrier Fully compliant as per EN41003
Cable Lengths RG59 = 150m, UR202 = 180m

DS3 Line Interface
Port G.703, 75 ohm unbalanced
Interface BNC (75 ohm)
Line Coding B3ZS
Bit Rate 44.736 Mbps +/- 20 ppm
Barrier Fully compliant as per EN41003
Cable Lengths RG59 = 120m, UR202 = 150m

DTE Interface
Port HSSI
Interface 50 way SCSI2 connector
Bit Rate Same as Line Rate

Configuration
Clocks Internal, E3/DS3 Loop
Set by DIP switches

Compliance & Approvals
Performance PD7024 (NTR4)
Safety EN41003, EN60950
EMC EN55022, EN50082

Integral Power Supply
AC Mains 100 - 250 VAC, 50 - 60Hz, 115 - 45mA, IEC Connector
-48VDC -40 to -72 VDC, 150 - 70mA
Power Consumption 5 watts approx when operating

Environment
Temp 0 - 50 deg C
Humidity 95% RH, non-condensing
Pressure 86 - 106 kPa

Packaging
Type Modem, 1U high without feet, IP30C

Dimensions (W x D x H mm )
Rack mount 202 x 132 x 44 (without feet)
Desktop 202 x 132 x 47 (with feet)
Part Number
Product AC Mains: 100 - 250 VAC DC Power: -48VDC
80-05-234 80-21-234
1U 2 unit rack mount kit 80-05-256 80-05-256
6U 18 unit rack mount kit 80-05-250 80-05-255

Product variants with 12V to 24V DC operation are also available on request.

HSSI Converters
  • Ethernet Converter to HSSI Serial - LHM1000
  • Sophisticated connection at 8.448Mbit/s to unframed E2 leased lines - FM4850
  • Plug and play connection at 34.368Mbit/s to unframed E3 leased lines - DC3445
  • Sophisticated connection at 34.368Mbit/s to unframed E3 leased lines - FM4900
  • Plug and play connection at 44.736Mbit/s to unframed DS3 leased lines - DC3445
  • Sophisticated connection at 44.736Mbit/s to unframed DS3 leased lines - FM4950
  • Connection between routers with Packet over Sonet (POS) and HSSI interfaces - PA1000
  • Connection between routers with Packet over Sonet (POS) interfaces via a HSSI satellite link at up to 100Mbps - PA1000
  • HSSI to EIA530 conversion - BC2X00
E3 Converters

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