Archive for the ‘Telecommunication’ Category
CTIA Send Petition For FCC to Opens More Spectrum
Recently the CTIA wireless association gave a petition letter to the Federal Communications Commission (FCC). The letter contained a petition of spectrum access for commercial use.
In the letter, CTIA also urged the FCC to commit to identify and allocate a large amount of spectrum available, with a minimum goal 800MHz, which is for licensed commercial wireless services … such allocations will be an important step towards meeting the demand for rapid acceleration and maintain U.S. leadership in global market mobile broadband.
In addition, CTIA labels as a source wave critical frequency. And for that it must be released immediately to prepare for future wireless broadband needs as the adoption of advanced wireless data services are growing rapidly.
CDMA technology evolution
In recent years there is debate in the world of telecommunications since the presence of CDMA technology as the solution of the rival GSM technology. Although the current CDMA device that was held in the new homeland-in the form of CDMA 2000-1x, but the echo is heard in the community that CDMA is the 3G. This is not without cause, because the public has been familiar with mobile phone GSM / GPRS which is actually a 2G/2.5G. So quite reasonable if the CDMA technology in the later regard as 3G. CDMA businesses including operators and manufacturers are also heavily promoting 3G legitimate to capture the mobile phone market this crowded.
CDMA 2000 1x is still the alternative technologies of GSM and GPRS technology, known as 2G/2.5G. To go to the era of 3G, CDMA-1x technology must evolve into CDMA EV-DO and CDMA EV-DV. Initially introduced CDMA technology is widely used one as a ‘fixed wireless’. Then along with the development of lucrative mobile market but on the other hand there is limited bandwidth GSM, then the community has been intoduced to CDMA-based mobile phone 2000 1x. Cellular operators brought the promotion of this technology began a year later intensively since 2004 with very competitive rates. It is in fact in theory than for voice communication, data rate (bit-rate) CDMA 2000 1x could surpass GSM / GPRS (see graph). This speed is enough for applications such as streaming video.
In the next development to provide high speed data services, CDMA operators have to invest again on a separate platform called CDMA EV-DO. As the name implies this EVDO CDMA specific allotment for mobile data services alone (data only). If this is EVDO there, then be referred to as 3G/CDMA technology. The next evolution is to enable CDMA EVDV voice and data services (Data & Voice) in a single platform.
Telecommunication Transformer
The applications that demand high bandwidths and fast switching speeds Telecom transformers are utilized. It is used to isolates the signal between primary and secondary windings.
There are several types of telecom transformers normally used. Few of transformer options include DSL, xDSL, E1, T1, ISDN, LAN, WAN & ATM transformer models. A lot of Modern transformers are also available. A DSL or xDSL transformer uses the digital subscriber loop (DSL) or extended digital subscribe loop (xDSL) for telecommunication protocols (Broadband). A T1 or E1 type of transformer is designed to use along with a T1 line or an E1 line. An ISDN type of transformer is the usual telecommunications transformer used for integrated tele-services digital network (ISDN), ISDN is an international standard for the digital transmission of voice and data.
A LAN type of transformer is designed for use in a local area network (LAN), while a WAN type is used in a wide area network (WAN). An ATM type of transformer works with asynchronous transfer mode (ATM) Performance specifications for any telecom transformers include the range of operating frequency, direct current resistance, insertion loss, high potential (hipot) level, 3-decibel (dB) bandwidth, operating temperature, and maximum dimension.
Direct current resistance or commonly known as DCR is the resistance of the telecom transformer’s winding as measured with DC current. It is commonly specified as a maximum rating. Insertion loss is the measured loss through the device excluding the power division factor. It is measured in dB and calculated as the ratio of output power to input power. HIPOT level is the maximum voltage a telecom transformer can take without breaking the winding. 3 dB bandwidth is the frequency range.
Telecom transformers usually differ in terms of package type and method of packing. Integrated circuit (IC) package types include flat pack, single in-line package, dual in-line package, and small outline integrated circuit.
Board-level telecom transformers can employ either surface mounted technology or through hole technology. SMT adds components to a PCB by soldering component leads on to the top surface of the board. Through-hole technology fixes the components by inserting leads through holes and then soldering the leads in place on the other side of the board. Transformer
Hosted PBX – Powerful Telecommunication Features
Hosted PBX system with its powerful telecommunication features ideally suits businesses of all sizes. This phone system enjoys great demand among small business operators since it enables them to project a flourishing business image in an affordable manner.
Professional Call Handling Features to Impress Your Callers
Hosted PBX systems come with excellent phone answering features that will impress your callers. All incoming calls are welcomed with a pre-recorded professional greeting. Through further communications with the callers, this facility connects the calls to the appropriate extensions of the user. The callers are given a number of custom menu options including dial by name, and dial by extension so that they can be connected quickly to the appropriate phone lines. Callers can listen to music while the calls are being connected.
Make Use of Advanced Functionalities for Effective Communication
When you are busy with work or on the move, you may not be able to attend every call coming to your office. For effectively managing such situations, the hosted PBX system comes with a number of advanced features. The callers can leave their voice messages in the voice mail boxes of the PBX system, when they are unable to reach the user. Even fax mail and voice to email services are made available for the callers to convey their messages.
Benefits of Hosted PBX Systems
Benefits that hosted PBX systems offer small and home-based businesses are many. This is the main reason why such phone systems are very popular among small business owners. Some of the notable features include:
- No expensive hardware is required
- Save on start-up and maintenance costs
- No additional phone lines
- Reduced long distance charges
- Improved business credibility
- Call transferring with find me follow me service
A hosted PBX system with all its powerful telecommunication features attracts more customers to your business, improves productivity and brings in more revenue for your business.