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To achieve this, signals of various wavelengths have to be multiplexed. Using RF overlay is possible only with 1550 nm CATV. In the case of necessity to connect the subscriber with one fiber, in which both the GPON and the CATV would be carried, the so-called RF overlay, or WDM transmission of 13 nm (GPON) and 1550 nm (CATV) signals in one fiber, is required.
#Use overlay no limits 2 tv
The advantages of using parallel overlay networks for GPON and CATV transmissions in small networks are lower costs of central 1310 nm devices as well as a possibility of separating a TV network for formal purposes. Of course, the fiber dedicated for television broadcast can also be used with 1550 nm transmission, and there would be no limits to scaling and power budget. 1310 nm transmission is limited because no commercial optical amplifiers for this wavelength are currently available, thus it is not a solution which can be applied in large projects, and the available power budget allows 1圆4 split only in short links. At the subscriber end, two subscriber devices are then used – the CATV Fibrain FCMN3 micro-receiver for television and Dasan Networks GPON ONT for Internet/VoIP. This means somewhat higher costs of the passive infrastructure (depending on the project, it is about 10%), since the number of required fibers, splitters, etc. 1310 nm CATV transmission always requires a dedicated fiber if GPON is used simultaneously, thus when using it the signal must be carried to the subscriber in two fibers. In FTTH networks, it is usually the 1550 nm wavelength or (rarely) 1310 nm. Technically, the CATV utilizes a dedicated optical wavelength. capability of broadcasting television in DVB-C, DVB-T, PAL or even DVB-S format.
#Use overlay no limits 2 full
Full compatibility with HFC networks and capability of easy hybrid CATV HFC/PON network construction Well-known methods of coding and supplying Premium packages No necessity to supply the subscriber with a decoder, which means much smaller costs for the operator It is the easiest and most cost-effective way to construct a multiroom Does not consume the bitrate used by the Internet (of course independently of the number of HD channels or 3D channels in the future) The CATV technology is simple and well-known in HFC networks and has a lot of advantages, such as: Fibrain is the only company out of a few in the market offering both CATV and IPTV solutions. The CATV utilizes the broadcast type of access, and the IPTV is usually multicast or, less often, unicast. The two basic technologies are the so-called CATV (“optical” television) and IPTV. They also allow a big freedom in choosing the technology of television broadcasting. The operator can then count on a stronger customer loyalty, which would lead to increasing the average revenue per user (ARPU) and improving the operator’s competiveness.ĭue to high signal quality and enormous bitrate, FTTH networks are well prepared for offering television services. This is of course due to the fact that an operator who is able to supply the famous Triple Play (the three basic services – internet, television, telephone) to their subscribers can fully satisfy their needs for telecommunication services. So what kind of layout should I use as the root of the Activity, how should I make this part-of-a-layout-overlapping-the-neighbours thingy possible? How should I go about it? Any suggestions will be greatly appreciated.More and more operators, including those originating from the ISP environment or migrating from wireless solutions, want to have a capability of supplying television service to their subscribers.
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Only the part of the RecyclerView containing these newly added elements should overlay the rest of the Activity's content (i.e. Now the thing is that at runtime, some more elements are added to the red bordered RecyclerView, collectively shown by purple-bordered box in the RHS of the diagram. The dark blue border encloses a FrameLayout to which a Fragment will be added at runtime. The black border encloses the RelativeLayout ( I can change it to LinearLayout or something else if that solves my problem) which is the root of the Activity's layout, the red border encloses a RecyclerView, the green border inside it encloses an element of the RecyclerView. LHS of the following disagram shows the initial structure of the Activity set up in XML, and the RHS shows the Activity after some runtime changes.