eNET ADSL Multiplexer


Oval Callout:  
The eNET 8R+ ADSL multiplexer is a remotely-powered, dislocated access node. It combines ATU-C and ATU-R functions on the same DSL platform:
Remotely-powered, dislocated ADSL access node, with integrated ATU-C and ATU-R functions on the same DSL platform.












Technical Specifications

Text Box:  
Microprocessor board
16Mb RAM
100MB Ethernet port
JTAG port
HDLC port
ADSL ports surge protection
Text Box: eNet ADSL CP (ATU-R)
1-channel ADSL-CPE board
supports ADSL2+
Low power operation
JTAG port
Text Box: eNet ADSL CO (ATU-C)
8-channel ADSL-CO board 
supports ADSL2
Low power operation
JTAG port
Text Box: eNet SPLITTERS
8 combi splitters
8 line outputs (ADSL+POTS)
8 line inputs (POTS)
















ADSL Compliance*
Software selectable ADSL standards compliance:
  • ITU G.992.1 (ADSL G.dmt), all Annexes
  • ADSL data rates up to 8 Mb/s downstream and 1 Mb/s upstream
  • ITU G.992.5 (ADSL2+), all Annexes
  • ADSL2+ data rates up to 24 Mb/s downstream and 1 Mb/s upstream
  • ITU G.992.3 (ADSL2), all Annexes

  • ITU G.992.2 (ADSL G.lite), all Annexes

*This ADSL access platform implements ITU G.992.1 and ITU G.992.5






While terminating the user ADSL physical layer signals, the net result of this integration is multiplexing the user ATM PVCs from the downlink ADSL U-interfaces, and bridging them onto a single ADSL2+ uplink U-interface towards a DSLAM. The U-interfaces support PPPoEoATM, IPoEoATM, IPoA, and PPPoA access protocol stacks and encapsulations.







Protocol Stacks and Encapsulations


* The eNET ADSL device is set to support PPPoE at U-interfaces.













  Physical Description
 Management Software


The eNET 8R+ includes a range of software and protocols for its configuration and management (view, change, save and restore the configuration):
  • EmWeb – Embedded Web Server
    • Provides an IP framework for management over web pages
  • EmWeb – CLI (Command Line Interface)
    • CLI can be accessed by:
      • UART
      • Telnet
      • SSH
  • EmWeb - UPnP
    • Supports device discovery, configuration and events over IP using standard protocols
  • SNMP
    • SNMP stack supports:
      • SNMP v1
      • SNMP v2c
      • SNMP v3
  • Auto-Configuration
    • DSL Forum TR-37 Auto-Configuration
    • PVC auto-detection (ScanPVC)
  • Software update
    • HTTP client and server
    • FTP client and server
    • TFTP client or server
  • Configuration Agents
  • Generic management interface
    • Software is readily extended further with application-specific custom applications

* TP=Twisted-pair



Oval Callout:  
Line Callout 3 (Border and Accent Bar): Light Indicators
Line Callout 3 (Border and Accent Bar): UPLINK TP* (x1)
AWG 26 (0.4 mm)
Remote Power
Line Callout 3 (Border and Accent Bar): Ethernet RJ45 
Line Callout 3 (Border and Accent Bar): RS232
Line Callout 3 (Border and Accent Bar): PCM PGS TP* (x8)
AWG 26   (0.4 mm) 
Line Callout 3 (Border and Accent Bar): DOWNLINK TP* (x8)
AWG 26 (0.4 mm)












Management Platform


A client/server management platform is used:













Using a browser at any client computer, one can manage any eNET-8R+ ADSL multiplexer via a server computer with the following software installed:
  • Web-server
  • Database
  • SNTP-server
  • Mail-server
  • For each eNET 8R+ ADSL multiplexer, the database keeps track of both types of data, the device configuration and subscriber profiles, which can be managed by the browser at a client computer.

    The SNTP (Simple Network Time Protocol) server synchronizes times on all eNET 8R+ devices.

    The Mail server acquires the email messages submitted by eNET 8R+ devices.




    Functional Description





























    * Network software creates, configures, and handles drivers which manage devices, ports and data channels; supports layering of devices (e.g. ATM driver on DSL interface); controls data transfer to hardware (e.g. Utopia, PCI, EPB, Ethernet, USB, HDLC, TDM, DSP); manages physical devices (e.g. DSL PHY management); manipulates data (e.g. RFC1483 encapsulation); provides traffic shaping and pacing (QoS); and gives a consistent framework for attching drivers (transports) as ethernet-like interfaces to the Bridge.
    **  The IEEE 802.1 Bridge (802.1d / 802.1q with Spanning Tree Support) is a Layer 2 protocol which, together with the associated ATM (Layer 2) and IP (Layer 3) protocols, provides fast and efficient forwarding of ATM and IP traffic. Set to the bridging-mode, the eNET multiplexes and forwards ATM traffic between the attached ATM/DSL ports, while terminating IP traffic, except at the uplink port which is used for remote configuration and management.
    The IEEE 802.1Q bridging encompasses  protocol translation, access loop identification, QoS, and security. Snooping, modifying  or terminating protocols in layers above the AAL are also possible, as well as the support for multicast deployments, user traceability, and user isolation (whether enabling VLAN or disabling undesirable bridging among user traffic).
    *** Besides the Bridge Layer 2 protocol, the eNET implements other Layer 2/2.5 protocols:
    • PPP
      • PPPoA Client / Server
      • PPPoE Client
      • PPPoE Pass Through
    • PPTP
    • RFC2684 (1483) Encapsulation
    • Classical IP (PVC and SVC based)
    • ATM Forum LEC

            It also supports ATM specific protocols:

    • AAL0, AAL1, AAL2, AAL3/4, AAL5
    • ATM Forum UNI 3.0, 3.1, 4.0 Signaling
    • I.610 OAM Management
    • ILMI 4.1
    • Cell Switching
    • ATM Forum TM4.1

    IP Stack :

    • IPv4 unicast forwarding
    • TCP, UDP (+ Fast UDP), ICMP
    • IGMP and multicast forwarding
    • ARP, RIP
    • BSD Socket interface to TCP, UDP and RAW sockets
    • Ping and traceroute clients
    • Virtual, Secondary and Unnumbered Interfaces
    • TCP MSS Clamp
    • Dual stack IPv4 / IPv6 Stack
    • IPSec interface
    • OSPF
    • OpenSSL SSL library support


    • NAT/NAPT Support
    • Automatic Address Replacement
    • Reserved Mappings
    • ALGs
    • Firewall
    • WAN, LAN and DMZ Interfaces
    • Block / Allow Inbound / Outbound Sessions
    • Intrusion Detection
    • Spot common DoS attacks
    • Black list hosts
    • OpenSSL Cryptography Library Support
    • Makes use of H/W crypto where possible

    IP Services and Additions:

    • DHCP Client, Relay and Server
    • DNS Client and Relay (with simple local server)
    • SNTP
    • RADIUS Client
    • DHCP – determining names of LAN machines
    • DNS Relay – serving local names
    • Dynamic ZIPB
    • PPP – dial on demand


    • Metered Pools, Priority Message/Data Queues
    • Classifier
    • Meter (Policing)
    • Scheduler (Shaping, Dropping)
    • Multiple queues per data channel
    • FastUDP Interface for Voice (RTP)
    • ATM PVC QoS
      • traffic class (CBR, VBR-RT, VBR-nRT, or UBR),
      • traffic profile (PCR, SCR, MBS).
    • Ethernet QoS

    A fundamental difference from ATM is that multiple Ethernet traffic classes may be multiplexed over a single VLAN, as opposed to a single ATM traffic class per ATM VC. Using Ethernet, the traffic class can be determined frame-by-frame by examining the VLAN tag priority field.

    Voice Over IP (VoIP):

    • MGCP, SIP
    • RTP / RTCP
    • Telephony Functions
      • Call waiting, call hold, 3-way calling etc.

    Voice Over ATM (VoATM):

    • I.366.2 / Coppercom / Jetstream support

































































    Address. Hrvatske Mornarice 1F 21000 Split Croatia | Phone. +385 21 32 36 70 | Fax. +385 21 32 36 72