By Lawrence Harte
ISBN-10: 097280532X
ISBN-13: 9780972805322
Voice over info Networks for Managers explains how and why businesses changing their cellphone platforms to take advantage of voice over info platforms. This ebook explains how your organization can lessen conversation expenses forty% to 70%, continue utilizing your latest mobile platforms, and raise profit from new conversation functions.
The writer labored with greater than a hundred businesses to find the serious steps businesses should still take and dangers to prevent while transitioning from conventional cellphone platforms to voice over facts networks. mobile platforms are necessary to survival of businesses and preliminary checking out, transition ideas, and anticipation of destiny details integration are vital components of the conversion approach.
Most very important, this ebook explains why one corporation can't offer the entire options and that it is very important have an independent realizing of the current concepts, key dangers they might current, and the way your choice will verify your skill to satisfy your destiny communique wishes.
Learn the fundamentals of ways net cellphone provider works. This comprises voice digitization, facts compression, and the way your offerings of those will impacts your voice caliber. mentioned are the elemental approaches of sending packets in the course of the net and the way the lack of packets (and a few do wander away) don't frequently impact the voice caliber. you'll know about gateways that convert information to phone signs and net phone merchant (ITSP) businesses that deal with the connections among you and conventional phones through the use of gatekeepers.
An evaluate of self reliant mobile structures together with key phone structures (KTS), deepest department trade (PBX) and computing device cellphone integration (CTI) allows you to comprehend what is going to be replaced. An creation of knowledge conversation networks explains the basics of information networks together with neighborhood region networks (LAN) and the net. you'll research what needs to ensue to mix voice and knowledge conversation structures besides the major recommendations and impression those offerings could have in your information communique platforms.
Discover the variations among IP Centrex and web PBX (iPBX) structures and which of those strategies could be the best option to your corporation. you'll find out about the numerous different types of web phones (IP Telephones). those mobilephone kinds variety from software program basically (called smooth telephones) to complete functionality web phones (called challenging Phones). know about name servers and the complicated name keep watch over positive factors they could offer.
Discussed are the common kinds of info connections are utilized in corporation communique platforms similar to leased line, body relay, DSL, cable modems, and the way they might have to swap (if in any respect) to allow voice over facts carrier. additionally, you will know about the common demanding situations akin to firewalls and proxy servers and recommendations that information communications managers might want to deal with while enforcing those adjustments.
How to attach your info community to public mobilephone networks. you'll approximately techniques together with utilizing gateways or net cell merchant (ITSP) to supply connections to and out of your facts community to the general public mobilephone community. discover why the kinds of conversion you opt will dramatically influence the reliability and caliber of your carrier.
Understand the foremost caliber of carrier (QoS), defense, and reliability concerns and the way to make sure you get toll caliber voice whilst utilizing information networks. defined are the variations in billing and operations. notice a number of the complicated positive factors and companies reminiscent of unified messaging and clever name routing that aren't attainable with most standard mobile platforms.
There are capability demanding situations and strategies with voice over info community carrier. you are going to find out how businesses have conquer lots of those demanding situations and occasionally, grew to become those demanding situations into merits.
Learn the language and traditional utilized by the together with H.323, consultation Initiated Protocol (SIP), Media Gateway C
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Example text
Figure 36 shows the key parts of an Internet service provider (ISP) and how they can affect your communications reliability. This diagram shows that an Internet connection can be divided into an ISP portion and an access portion. This example shows an Internet telephone that is connected to a cable modem. The cable modem is connected to the head-end of the cable television system where a gateway adapts the data from the cable network into a Copyright ©, 2003, ALTHOS, Inc -59- Introduction To IP Telephony Figure 36, ISP Reliability format that can be used by the ISP.
Because packet loss is infreCopyright ©, 2003, ALTHOS, Inc -50- Introduction To IP Telephony quent and the packet size is relatively small, the loss of packets usually results in the temporary muting of information. In some cases, when a packet is lost, the missing segment may be recreated from the audio packet that is received from previous packets. Our voice does not change that much from packet to packet so we can repeat the previous packet to fill in the missing audio. As a result, if number of packets that are lost is relatively small, it is unnoticeable by the user.
This example shows that packet loss results in the temporary muting of the audio signal. Packet corruption results in the creation of a different altered sound than the sound that was previously transmitted. Echo results from some of the caller’s audio signal being sent back (audio feedback) by the receiver of the call. Copyright ©, 2003, ALTHOS, Inc -51- Introduction To IP Telephony Figure 30, Internet Telephone Audio Distortion Security Communication security involves the control of physical access to information, identity validation (authentication), service authorization, and information privacy protection (encryption).