Multi-Faceted E1 Circuit Protection

Resilient E1 Automatic Protection Switch

  • Deliver on Stringent Service Level Agreements 
  • Back Up Mission Critical Connectivity
  • Disaster Recovery
Product Image


9" (L) x 7.3” (W) x 1.50” (H)


E1 WAN Link Protector

Perseverant and Secure Voice, Video, & Data Connectivity

Engage's SynAPS-E1 delivers critical infrastructure connectivity assurance that utilizes a “Guardian Spirit” with Multi-Circuit and Multi-Technology “powers” to exercise every available option to keep the Voice, Video or Data systems fully operational. The SynAPS-E1s is targeted at the Critical Infrastructure connectivity requirements of Government Agencies, Multi-site Corporations and Organizations in many different sectors of the economy.
Critical Infrastructure

Critical infrastructure is defined as the collection of public and private services that are essential to sustain government, provide for a safe living environment, maintain day-to-day business, and secure a prosperous economy. They include both public and private enterprise services such as:

 Defense & Defence Contractors 
 Emergency Services & 911 Public Safety Dispatch Centers
 Telecommunications Providers 
 Natural Gas & Electric Power Utility Companies
 Oil and Gas Companies 
 Banking & Financial Services Institutions
 Transportation Agencies 

Multi-Faceted E1 Circuit Protection

SynAPS-E1 is a Multi-Faceted protection switch with 4 E1 and 2 Ethernet interfaces. The third and fourth E1s are used for intelligently switching the Primary to a Secondary or Tertiary circuit.

Circuit Extension Over Packet Networks

The SynAPS-E1's  conversion of the circuit to packets facilitates the utilization of data networks for backup over 2 Independent LAN interfaces that are routable over packet networks such as:
 LANs  WANs  xDSL  MANs  Satellite  Wireless

Encryption Method

The Advanced Encryption Standard (AES) is utilized by the SynAPS-E1  to protect electronic data. The AES algorithm is a symmetric block cipher that encrypts and decrypts information. AES is a FIPS approved symmetric encryption algorithm that may be used by U.S. Government organizations (and others) to protect sensitive information.

Key Management

Automated key management configurations ensure timely key transitions and eliminate the operational and maintenance costs of managing an encrypted network with manual key distribution.

Proven Interoperability

The SynAPS-E1  interface has over a decade of proven interoperability with the full range of E1 communication equipment including:

  • WAN Bridges and Routers
  • PBX Trunks
  • Video Codecs
  • Voice and Data Multiplexers
  • Cellular Base Stations
  • Echo Canceller 
    The SynAPS-E1  has an integrated E1 Echo Canceller that cancels up to 64 milliseconds of Far End echo. The echo canceller meets ITU-T G.164, G.165 and ITU-T G.168 requirements for echo cancellation.

Echo Cancellation Module Option

Echo Canceller 
The SynAPS-E1 -Ecan is a module that has an integrated E1 Echo Canceller option that cancels up to 64 milliseconds of Far End echo. The echo canceller meets ITU-T G.164, G.165 and ITU-T G.168 requirements for echo cancellation.

Echo Cancellation becomes a requirement for Circuits that are extended over IP networks when the round trip packet delay between the end points exceeds 25 milliseconds.

Lossless Data Compression Option

The SynAPS-E1 -C continuously detects idle and redundant data within each E1 Voice circuit resulting in as much as a 40 to 1 bandwidth savings.
TDM over IP WAN bandwidth is not consumed by silent or redundant circuits. 

Note: Compression only supported with SynAPS-E1 -Cmodels.


Encryption Algorithm
  • AES 256-bit
  • Fully Automatic key management
E1/Fractional E1 Specifications
  • 1 RED and 1 BLACK E1
  • Integrated CSU Connects to Telco E1 or with a crossover cable to DS1
  • Framing - CRC4 or FAS or UnFRAMED
  • Coding - HDB3 or AMI
  • Supports even multiples of DS0 assignments from 1 to 31
  • Not Contiguous Configuration x-y,z 
Supported LAN Network Interface
  • Two 10/100BaseT Full/Half Ethernet
  • Auto negotiation or Configured Speed and Duplex
LAN Network Protocols Supported
  • Telnet TFTP Online Upgrade Capable (FLASH ROMs)
  • BlackBond is fully operational during upgrade
  • 9" (L) x 7.3” (W) x 1.50” (H)
  • Optional Medeco Case
  • 12-30 VDC, 1.0A.
  • Locking Connector 
  • Optional -48V 0.25 Amp
  • Hot Standby
Automatic Protection Switch
  • Configured E1 Switch Criteria Alarms: Red, Yellow, CRC 
  • Proactive Circuit to Packet with Assured Delivery and Hot Backup
  • 0° to 132° F (-10° to 50°C ) operating temperature
  • Up to 90% operating humidity (non-condensing)
  • Optional Extended Temperature Range available
  • CE
  • Safety -IEC60950
  • EMC - CFR 47 Part 15 Sub Part B:2002, EN55022:1994+A1&A2, EN55024, ICES-003 1997, CISPR 22 Level A
  • Telecom TBR12, TBR13 
  • Telnet support with Edit and Paste Template Files
  • Console Port for Out of Band Management
  • SNMP support (MIB I, MIB II) with configured traps
  • Remote config., monitoring, & reset
  • Telco 
  • Local Loop, Remote Loop
Echo Canceller Module (Option)
  • Voiceband Echo Cancelling according to ITU G.165 and G.168
  • u- and A-Law coding according to ITU G.711
  • 31 channels with end echo path delay of less than 63.75 ms

Ordering Information

Chassis Slot Card: SynAPS E1

Rack Mount & Power Supply Options:

BlackGate RS232 Rear
BlackGate RS232 Rear

Part No.



SynAPS-E1, *Note: x = number of specified E1 ports to be enabled (3 or 4)

Optional Features

Optional Features


ROHS compliant materials and processes, Restriction of Hazardous Substances no Pb


Echo Cancellation Module, Far End 64ms Tail Echo Cancellation


Lossless Data Compression, Bandwidth Minimizer 56:1 idle/redundant

Power Supply Options

Power Supply Options


90-220 VAC Universal International/Domestic Adapter


DUAL REDUNDANT, 90-220 VAC Adapter


Internal Power Module, -48 VDC Screw Terminals


DUAL REDUNDANT, -48 VDC Screw Terminals


WIREDC Option, +24 VDC Screw Terminals



Rack Mount Options

Rack Mount Option


Rack Mount Kit - for single 7" products (Fits both 19" and 23" racks)


2 unit 19" x 1RU Rack Mount Kit for 7" products




Right Angle Wall Mount Bracket Kit

So What's Next?


Engage Communication
9565 Soquel Drive. Aptos, CA 95003
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Telephone: 1-831-688-1021
Toll Free : 1-877-ENGAGE4
Designed, Fabricated, and Assembled
in America 
Supported Worldwide