These protocols generally require low bandwidth, might use a connection-oriented model TCP , and are typically not delay sensitive. Bearer protocols actually carry the stream of voice samples. Bearer protocols are delay sensitive, are connectionless UDP and require special treatment to ensure prioritization over other types of traffic.
A separate stream is usually required in each direction. Voice traffic needs more bandwidth than data traffic, and that bandwidth needs to be protected so it remains constant and prevents degradation.
Also, be sure to ensure adequate coverage at dBm to dBm level and capacity for the expected voice load. Create a Unique Radio Profile for Voice. Call admission control, configured in the WLAN Service profile, limits the number of concurrent phone calls.
Both methods work—which one you use is dictated by your voice clients. Voice traffic must use seamless roaming so no call is interrupted. You can achieve seamless roaming with:. QoS should be supported end-to-end with voice traffic. Ensure that infrastructure switches and routers support and preserve data prioritization across the full path of any voice streams.
Some say 'today it doesn't make a difference', meaning that everyone might as well be on data instead of voice, so therefore, for example, Apple and the data providers have colluded to prevent you from buying or using an iPhone without a 'data plan'. Now what is the value of a lesser capability if you must pay for the greater capability in order to use it? Therefore, in the United States you cannot use the cellular voice service on an iPhone for example without purchasing a 'data service' wether you need the cellular data service or not.
The answer then is: it depends For 2G and 3G, there are basically two networks, one for voice, one for 'data'. The voice network is 'circuit switched' as it connects to the circuit switched PSTN voice network. The data network is generally packet-switched - basically IP. Note that the distinction between 'voice' and 'data' is very much dependent on the network infrastructure. It just means 'binary' and not 'analog'.
It depends mostly on the age of the mobile equipment. When it comes to 4G networks things become a bit different - 4G is 'packet only'. As such, a 4G voice call is a Voice Over IP call and as such, the transport mechanism is the same for both data and voice.
However, individual IP packets might have different ToS and QoS parameters to tell the network to treat the packets differently - low latency, low packet loss, etc. The packets will also have a different destination depending on what you are doing: if you're browsing the web, they'll go to an internet gateway router.
If you are calling another 4G phone, they'll go straight to that phone. In summary, there's a lot to it, and with the onset of 'all-IP', the distinction in actual network architecture and protocols becomes less and less as everything is made to support IP. Sign up to join this community. The best answers are voted up and rise to the top. Stack Overflow for Teams — Collaborate and share knowledge with a private group.
Create a free Team What is Teams? Learn more. Ask Question. However, because phone conversations are happening in real time, the data packets have to arrive in the right order and be reassembled immediately. Since VoIP is subject to the same slowdowns as any other data, users opting for Internet-based telephone systems may require more bandwidth to ensure the most out of their investment. With a wide-ranging menu of services and access to some of the most advanced technologies on the market, the company has helped small business owners thrive and adapt to changing technologies.
To discuss your needs and request an estimate, visit the website or call , and follow their Facebook page for more tech tips today. Choose two answers. Can be written in DDN format c. Are listed in the data-link trailer d. Used by routers to make a forwarding decision Anghel and M. Digitalizing helped to compress the signal which was much more efficient than analog systems, allowing the transfer of more packets into the same bandwidth and less power.
Several other versions of the 2G communication were 2. The customers are also at an advantage as they are able to locate stores remotely Mohammed et al. Running costs of an online business are much lower as compared to running a physical business.
These optical fiber cables are thin strands of glass the size of a human hair. Explainthatstuff, stated that a single strand of optical fiber can carry approximately 25, telephone calls and a bundle of the optical fiber can carry a million calls. Another type of network cable is the coaxial cable. It is mainly used by telephone companies to provide interference-free transmission electrical signals.
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