• Protection Switch

DS3 Failover (DS3 Automatic Protection) APS Switch

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Product Overview

DS3 Protection (Fail Over) Switch allows the user to connect a single DS3 line from the telephone company to an "active", as well as to a "standby" DS3 terminal, such as data server, router etc. at the customer premises. In the event of a terminal equipment failure at the customer premises, the DS3 Protection (Fail-Over) Switch automatically "switches" the DS3 line from the service provider to the standby (working) DS3 terminal.

DS3 Failover (DS3 Automatic Protection) APS Switch

DS3 Failover (DS3 Automatic Protection) APS Switch - Presentation

DS3 Failover (DS3 Automatic Protection) APS Switch - Data Sheet

How it works?

In the event of the failure of the data server / router connected to the "A / active" port of the DS3 Protection (Fail-Over) Switch, the DS3 line from the telephone company shall automatically be "switched" to the data server / router on the "B / standby" port of the DS3 Protection (Fail-Over) Switch. This ensures minimum downtime - which would have otherwise occurred due to equipment failure connected to the "A / active" port. This equipment may be used to enhance the reliability and the efficiency of the customer's data network.

Application Note

The DS3 Fail-Over Switch should be used when the customer wishes to connect redundant (active and standby) DS3 equipment (such as Routers) at the customers premises to a single DS3 service line from the telephone company.

The DS3 Fail-Over Switch will automatically switch the DS3 service line from the telephone company between the ACTIVE DS3 data server / router and the STANDBY DS3 data server / router. Should and whenever the ACTIVE DS3 data server / router fail (or be removed from service), the DS3 line from the telephone company automatically switches to the STANDBY DS3 data server / router without requiring any customer or user intervention.

The DS3 Fail-Over Switch may also be accessed remotely by the user to allow forced / manual switching between the two DS3 terminals through user executable software commands using Telnet..

DS3 (T3) Interfaces

Number of DS3 Interfaces – Telco 1 (in one DS3 line version)
2 (in two DS3 line version)
Number of DS3 Interfaces – Equipment 2 (in one DS3 line version)
4 (in two DS3 line version)
Bit rate 44.736 Mbps
Line code B3ZS
Framing Transparent (M-13 and C-Bit supported)
Pulse shape Meets ANSI T1.102-1993 and Bellcore GR-499-CORE
Connectors BNC, Co-axial Un-balanced
Impedance 75 Ohms
Signal level to declare loss of signal condition < 20mV
Signal level to clear loss of signal condition > 90mV

AC Power Supply Specifications

Output voltage of AC Adapter 100 - 240V AC
Range of input AC voltage 100 V to 240 V AC, 50Hz / 60Hz.
System Input voltage 7.5 V DC to 9.0 V DC with DC input polarity protection.
Power Supply Rating - Maximum full load output current 2.5 A at 7.5 V DC/9.0 V DC
Power consumption 14 watts
Input voltage reversal protection Provided in the Card
Efficiency at full load >86%
Feed connectors Dual Feed - 2 AC Inputs

DC Power Supply Specifications

Power supply -48V DC (-40V DC to -60V DC)
Input voltage reversal protection Provided in the Card
Power supply 1+1 Protected Inputs
Power consumption 14 watts
Feed connectors Dual Feed - 2 DC Inputs

Command Language

  • Command Line Interface (English text commands)

System Management and Access

  • Windows XP and Windows 7 compatible GUI
  • Telnet - CLI (Command Line Interface)
  • SNMP V2 (MIB File provided with the equipment)

Monitoring and Control Port

  • Serial Management Port (RS232) – COM Port
  • USB Serial Interface – COM Port
  • 10/100 BaseT for remote management over a LAN
  • 10/100 BaseT Telnet over a TCP-IP network

Ethernet Management Port (Telnet and SNMP) Specifications:

Network Interface RJ-45 Ethernet 10BaseT or 100BaseT-TX (auto sensing), MDI-X.
Compatibility Ethernet Version 2.0 IEEE802.3
Protocols Supported ARP, UDP/IP, TCP/IP, Telnet, ICMP, SNMP
Management SNMP (read only), Telnet login
EMI Compliance
  • Radiated and conducted emissions - complies with Class B limits of EN55022:1998
  • Direct and Indirect ESD - complies with EN55024:1998
  • RF Electromagnetic Field Immunity - complies with EN55024:1998
  • Electrical Fast Transient/Burst Immunity - complies with EN55024:1998
  • Power Frequency Magnetic Field Immunity - complies with EN55024:1998
  • RF Common Mode Conducted Susceptibility - complies with EN55024:1998

Clock

  • Synchronized to the network DS3 clock.

Chassis

  • 1U High (44 mm.)
  • 19-inch rack-mounting shelf

Compliance/Regulatory

  • Meets CE emission requirements
  • Complies with FCC Part 68 and EMC FCC Part 15 Class 2
  • Operation ETS 300 019 Class 3.2
  • Storage ETS 300 019 Class 1.2
  • Transportation ETS 300 019 Class 2.3

DS3 (T3) Interfaces

Number of DS3 Interfaces – Telco 1 (in one DS3 line version)
2 (in two DS3 line version)
Number of DS3 Interfaces – Equipment 2 (in one DS3 line version)
4 (in two DS3 line version)
Bit rate 44.736 Mbps
Line code B3ZS
Framing Transparent (M-13 and C-Bit supported)
Pulse shape Meets ANSI T1.102-1993 and Bellcore GR-499-CORE
Connectors BNC, Co-axial Un-balanced
Impedance 75 Ohms
Signal level to declare loss of signal condition < 20mV
Signal level to clear loss of signal condition > 90mV

AC Power Supply Specifications

Output voltage of AC Adapter 100 - 240V AC
Range of input AC voltage 100 V to 240 V AC, 50Hz / 60Hz.
System Input voltage 7.5 V DC to 9.0 V DC with DC input polarity protection.
Power Supply Rating - Maximum full load output current 2.5 A at 7.5 V DC/9.0 V DC
Power consumption 14 watts
Input voltage reversal protection Provided in the Card
Efficiency at full load >86%
Feed connectors Dual Feed - 2 AC Inputs

DC Power Supply Specifications

Power supply -48V DC (-40V DC to -60V DC)
Input voltage reversal protection Provided in the Card
Power supply 1+1 Protected Inputs
Power consumption 14 watts
Feed connectors Dual Feed - 2 DC Inputs

Command Language

  • Command Line Interface (English text commands)

System Management and Access

  • Windows XP and Windows 7 compatible GUI
  • Telnet - CLI (Command Line Interface)
  • SNMP V2 (MIB File provided with the equipment)

Monitoring and Control Port

  • Serial Management Port (RS232) – COM Port
  • USB Serial Interface – COM Port
  • 10/100 BaseT for remote management over a LAN
  • 10/100 BaseT Telnet over a TCP-IP network

Ethernet Management Port (Telnet and SNMP) Specifications:

Network Interface RJ-45 Ethernet 10BaseT or 100BaseT-TX (auto sensing), MDI-X.
Compatibility Ethernet Version 2.0 IEEE802.3
Protocols Supported ARP, UDP/IP, TCP/IP, Telnet, ICMP, SNMP
Management SNMP (read only), Telnet login
EMI Compliance
  • Radiated and conducted emissions - complies with Class B limits of EN55022:1998
  • Direct and Indirect ESD - complies with EN55024:1998
  • RF Electromagnetic Field Immunity - complies with EN55024:1998
  • Electrical Fast Transient/Burst Immunity - complies with EN55024:1998
  • Power Frequency Magnetic Field Immunity - complies with EN55024:1998
  • RF Common Mode Conducted Susceptibility - complies with EN55024:1998

Clock

  • Synchronized to the network DS3 clock.

Chassis

  • 1U High (44 mm.)
  • 19-inch rack-mounting shelf

Compliance/Regulatory

  • Meets CE emission requirements
  • Complies with FCC Part 68 and EMC FCC Part 15 Class 2
  • Operation ETS 300 019 Class 3.2
  • Storage ETS 300 019 Class 1.2
  • Transportation ETS 300 019 Class 2.3

Application Diagrams

Application Diagram 1

Telco DS3 Line Connected to Equipment - A

Telco DS3 Line Connected to Equipment - A



Upon failure of Equipment - A, the DS3 Telco line automatically switches to standby Equipment - B.

Application Diagram 2

Telco DS3 Line Connected to Equipment - B

Equipment - A Fails - Telco DS3 automatically switches to Equipment - B



Upon failure of Equipment - A, the DS3 Telco line automatically switches to standby Equipment - B.

Application Diagram 3

Equipment - A recovers - Telco T1 automatically switches to Equipment - A

Equipment - A recovers - Telco T1 automatically switches to Equipment - A