Positron AK624RU – Remote Unit, 8 Port Ethernet Compact Unit, 800 Mbps max Asymmetric, AC Powered, excl mounting & AC Adaptor




The Positron Access AK624RU Ethernet Access Device (EAD) is a cost-effective universal CPE with support for multi-pair Bonded VDSL2 Ethernet over Copper (EoCU) and Gigabit Fiber. This solution facilitates the delivery of Managed Ethernet Services for business customers, small cell backhaul and other demanding applications. The AK624RU facilitates the provisioning, monitoring and control of end-to-end Ethernet services with comprehensive support for SLA reporting.


The FlexStream AK624RU is specifically designed as a carrier grade solution to provide Ethernet services for small cell backhaul, business internet access, MTU/MDU, L2 VPN, streamed video and Gigabit connectivity. It is environmentally hardened to provide operators the flexibility to place the units inside a building or in an outside plant cabinet.

Bonded VDSL2 and ADSL2+ Ethernet over Copper

The AK624RU is a standard-based 8 pair VDSL2 and ADSL2+ EAD which provides network operators the means to deliver advanced Ethernet over Bonded Copper services to business customers at minimal cost over their existing copper infrastructure. The AK624RU is fully standard compliant and interoperates with leading 3rd party DSLAM from Alcatel-Lucent, Calix, Adtran, Huawei and others.

Positron Access Diagram AK622RU

Additional information

Weight 10.00 lbs
Dimensions 18.00 × 12.00 × 10.00 in


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  • Bandwidth over 16 Pairs: –
    • DS3**: 45 Mbps Asymmetric or Symmetric at CSA Reaches with Full Disturbers
    • Ethernet: 100 Mbps Symmetric at 4 Kft, 100 Mbps Asymmetric, 55 Mbps Symmetric at CSA Reaches with Full Disturbers  
  • System Latency: 2 ms  
  • Resiliency: Carrier grade automatic pair failure protection  
  • BER: 10-12

Standard Interfaces: DS3** : 

  • Number of BNC Ports: 2 per Card  
  • Line Code/Rate: B3ZS/44.736 Mbps ± 20 ppm  ­
  • Framing: C-bit Parity or M13
  • Payload Mode: Clear Channel, TDM, ATM, Scrambled ATM

Standard Interfaces: Ethernet:

  • Interfaces: Three 10/100 BaseT RJ45 and one 100 BaseFX or 1000 BaseX SFP port 
  • Compliance: IEEE 802.3

Outside Plant Pairs: 

  • Technology: MIMO on DMT 
  • Number of Pairs: 2 to 16 ­
  • Connector: 50-pin Telco 
  • Compliance: T1.417 (Spectral) 
  • IEEE 802.3ah EFM

Management Interfaces: 

  • 10/100 BaseT RJ45

Front Panel Indicators:

  • Status, Fuse, Fan Alarm, Battery A/B Alarm,
  • SFP status, Ethernet Link and Activity 
  • Outside Plant Pair Status (16)

Layer 2 Features:

  • VLAN Tagging: IEEE 802.1q Support  
  • Stacked VLAN Tagging IEEE 802.1ad (IEEE 802.1QinQ) 
  • Support up to 2036 byte Maximum Transmission Unit (MTUs) * 24 AWG copper pair ** AK355 system only Doc#: AK355/AK355E-011816 TECHNICAL SPECIFICATIONS •
  • Priorities: IEEE 802.1p, Port or IP DSCP 
  • Dynamic Bridging: 8K MAC Addresses  
  • Metro Ethernet Forum Certified (MEF9, MEF14)

Electrical Specifications:

  • AK355CP and AK355CP E units 
    • Power Input: -42 to -56.7 Vdc 
    • Max Heat Dissipation: 65 Watts 
  • AK355R and AK355R E units –
    • Line Powered by CO Unit or – Local Power Input: -42 to -56.7 Vdc –
    • Max Heat Dissipation: 60 Watts – Provides 48 Vdc, 15 Watt output

Environmental Specifications:

  • Operating Temperature: -40 to +65°C •
  • Storage Temperature: -40 to +70°C •
  • Relative Humidity: Up to 95%, non-condensing

Mechanical Specifications: 

  • Chassis Dimensions: 1.75” (4.5cm) High (1RU) x 17.2” (43.7cm) Wide x 10.5” (26.7cm) Deep • ­
  • Weight: Approximately 10 lbs (4.5 kg)

Alarm Contacts:

  • ­Critical, Major, Minor, SysID  
  • Alarm Cut-Off Pushbutton 
  • ­Auxiliary alarm inputs (2)

Network Management: 

  • Command Line Interface (CLI), SNMP  
  • Positron Element Management System (AKEMS) or AktinoView EMS, GUI and Web  
  • DS3 ATM Inband Management**  
  • Ethernet VLAN Inband Management

Regulatory Approval:

  • NEBS
  • UL60950 
  • FCC Part 15 Class

Ordering Information


Model # Description Availability
AK624RU   Remote – 8 pr Ethernet Compact Unit, 800Mbps max asymmetric, AC pwrd, excl mounting & AC adaptor   General Availability