Highways and railways in mountainous areas go through tunnels very often. For safety concerns, tunnels not only have to provide systems like fire protection, ventilation, traffic guidance, communications and lighting, but also are able to send real-time tunnel monitoring data or messages automatically to networking personnel in the remote-control center so that immediate actions can be taken when systems are broken or accidents occur in the tunnel.
The concept of modernized enterprise office is heavily leveraged high speed network environment more and more. It
becomes the challenge of the IT department of enterprise for the office layout. It’s not only for artistic and orderly
purpose but also the centralized management and IP based structured cabling to be considered. There are more factors
to be concerned for the office layout such as security, mobility, simplified asset management and energy saving. In
some large building, the traditionally UTP cooper cabling have been not able to fulfill the requirements for the IT administrators
to well organize the overall office layout.
There is often the challenge when deploys the network no matter what either telecom operator or enterprise. How is
the network able to extend the distance as expected? Or is it possible to convert the dual fiber and single fiber with
the existed cable laid and equipment with the minimum efforts?
In this application example, CTC Union ‘s FE and GbE media converters are deployed in a star topology network with Multiple
fiber links distributed from a central location. CTC Union’s Ethernet media converters provide copper-to-fiber conversion
for data rates of 10 Mbps up to 1000Mbps.
The network interface device (NID) is a kind of equipment which works as the concept of Ethernet service demarcation
defined by MEF (Metro Ethernet Forum). The carrier operators or service providers can deploy NID to enterprise
subscribers then provide the point-to-point E-Line or multipoint-to-multipoint E-LAN service which is logically Ethernet
virtual connection to replace the legacy TDM based lease line service.
In this application example, the PON technology remains one of the most popular deployment scenarios for FTTX in
the world today. To meet network and subscriber management requirements, the OLT equipment at the central site
will always require communication with subscriber management equipment such as DHCP server, provisioning
server or NMS based over IP. Connecting the OLT equipment to the Ethernet demarcation device simplifies the
deployment to transport the traffic over the Metro Ethernet network.
This application illustrates how to transport four Common Public Radio Interface (CPRI) channels over one fiber fronthaul link using Coarse
Wavelength Division Multiplexing (CWDM).
The CTC Union FRM220 CWDM MUX/DEMUX, OADM and 3R Transponder enable CWDM connectivity in a C-RAN (Cloud-Radio Access Network) over a fronthaul fiber link between Base Band Units (BBU) and Remote Radio Heads (RRH) located at two different cell towers.
This application will illustrate how to transport Common Public Radio Interface (CPRI) or Open Base Station
Architecture Initiative (OBSAI) channels over one fiber fronthaul link using Coarse Wavelength Multiplexing (CWDM)
then integrating into IP Ethernet based carrier network as mobile backhaul transportation solution for mobile
operator.
The CTC Union FRM220 CWDM MUX/DEMUX, OADM and 3R Transponder enable CWDM connectivity in a C-RAN (Cloud-Radio Access Network) over a fronthaul fiber link between Base Band Units (BBU) and Remote Radio Heads (RRH) located at two different cell towers.
With the Smartphone and tablet as the popular device of everyone to access the internet information such as
streaming video & audio, community APP…etc on the go, the bandwidth of wireless access is demanding by each
mobile subscriber. Even most of mobile network operators had expedited to migrate their network from 3G/3.5G to
4G LTE, the WiFi hotspot is still the most cost effective solution to make the mobile operators keep the service quality
for subscriber’s loyalty in many congested 3G/3.5G or even 4G cellular network regions such as shopping mall,
stadium, restaurant, crowded downtown area, airport and so on.