New Generation of Enterprise Aggregation Units

New Generation of Enterprise Aggregation Units

New Generation of Enterprise Aggregation Units


  1. General:


Driven by the rapid growth of the Ethernet economy, enterprise generated traffic is constantly on the growth. The rapid proliferation of digital based customer services drives a soaring demand that needs to be supported by the telecom operators.


To properly support this growing demand, the aging SDH technology that is widely used today needs to be upgraded to modern OTN bearers. New multiservice aggregation boxes are being called for. Such products need not only to support new enterprise high-rate bitstreams, but also to provide backwards compatibility for older generation and lower speed services.


The performance and functional bar for these boxes is high, as they need to support a large variety of services.


Furthermore, this new optical networking equipment needs to be remotely controlled, the physical enclosure comprising its electronics should be small (1U/2U at most), energy consumption should be minimized as much as possible, and above all, the cost of the equipment itself needs to be very low.


In general terms, from a network protection and redundancy perspective, most operators would require two OTU2/OTU1 connections to the network, as depicted in the figure below:


Apodis, IP Light’s product family of OTN processors, is the perfect building block for such Enterprise Aggregation Units.


Apodis processors can support up to 16 Client-Side services at multiple bit-rates ranging from 100Mbps up to 10Gbps. On its Line Side, Apodis processors can support up to 4 OTU2/OTU1 links. Apodis consumes very low power with a small footprint.


  1. Apodis technical description:


2.1 Apodis Block Diagram:


2.2 Apodis Main Features:


Up to 4x Line Interfaces:




FEC (Programmable per Line): GFEC, I.4, I.7

I/O: Serial or parallel SFI4.2



Up to 16x Client Interfaces:


Ethernet: FE, GbE, 10GE (Serial, XAUI)


GbE: Carrier Ethernet OA&M, IEEE 1588 V2 hardware time-stamping


SONET/SDH: STM1/STM4/STM16/STM64 (Serial, SFI4.2)

Section, Line termination





OTU2 I/O: Serial or parallel SFI4.2



ESCON, FC-100, FC-200, FC-400, FC-800, FC-1200 FC-1200 I/O: Serial or parallel XAUI


Video: DVB-ASI, 270M/1.5/3G SDI



Infiniband: IB SDR/DDR/QDR


CPRI: Options1-5, 7,8


Arbitrary bit-rates: Mapping to ODU0, ODU1, ODU2, ODUflex



Switching Granularity: ODU0, ODU1, ODU2, ODUflex


Very low power dissipation (4.5 W @ 2x10 GE to 2xOTU2 with GFEC)


Small Footprint: 31x31 mm


Apodis provides a full integrated suite of OA&M (Operations, Administration and Maintenance) capabilities for OTN, SDH and Ethernet, including RMON statistics for 10GE and 1GE services.


For access to remotely controlled optical networking devices, Apodis provides full accessibility to both the SDH DCC (Digital Communications Channel) and the OTN GCC (General Communications Channel) in-band data channels.


Jitter for CPRI-over-OTN Transport:


Apodis can support a wide range of CPRI signals (up to CPRI-7/8).


When transporting CPRI signals, Apodis processors can be configured to meet the stringent CPRI requirements of less than 2ppb jitter.


This performance is achieved while relying only on Apodis without requiring costly


external components


As a consequence, thanks to its integrated support of 1GE/10GE/CPRI signals, along with its superb jitter performance for the transport of CPRI signals, as well as reduced latency, Apodis OTN processors constitute the ideal solution for optical systems intended to support cellular networks’ Backhaul/Fronthaul/5G applications.




Apodis latency is extremely low. Some typical figures for end to end signal latencies (CPRI-OTN-CPRI) are of less than 12 µSec and 6 µSec for CPRI-3 and CPRI-7 signals respectively.


Power Consumption:


Apodis incorporates a sophisticated power management technique that drastically reduces Apodis’ power dissipation. The figures below provide the power dissipation for several configurations that could be applicable to Enterprise Aggregation units.


Apodis comes in five flavors of capacity and functionality. The table below shows the various types of products, each optimized to its relevant applications.


All Apodis versions come in the same package: 31mm X 31mm, 896 pins FCBGA, 1mm pitch.