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5 comments about Introduction to IP Telephony: Why and How Companies are Upgrading Private Telephone Systems to use VoIP Services.

1. This was a good starter book. While it had some technical stuff in it, the diagrams really helped me explain this technology to my staff.



2. Do NOT buy this PDF if you are a serious professional and want to work for VoIP. You will waste your money buying this and waste your time reading this. I do not think I can give even one star to this book. However Amazon does not accept review if I do not give at least one star hence I have give that rating.



3. This is a good introductory book for Telecom people who are looking to get into IP Telephony.The diagrams are good and the explanation are easy to understand.I even talked to the author and he was helpful.



4. As an expert in rare violins with extensive experience at Christie's, Sotheby's, and Antiques Roadshow, I always thought I was able to telephony. Turns out I didn't know the first thing about it! Live and learn, I always say. Thanks for opening my eyes, Mr. Harte.



5. While writing for my thesis on "VoIP for SME's", I read a couple of VoIP books. The book from Mr. Harte is very brief (and the layout/cover is not very attractive, it seems very outdated). Considering the price of the book, it has a very bad price/info ratio. If you want to read a primer, I would recommend VoIP for dummies. For more advanced reading, try Voice over packet networks from Wright (you need to know the fundamentals, before you read this one!).

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5 comments about Introduction to Telecom Billing: Usage Events, Call Detail Records, and Bill Cycles.

1. This is a good book for anyone who needs a quick and succint introduction on the billing process in Telecom industry without getting into technical details. It is a easy read. Will save days of research on google.



2. This is a good, but not terribly polished, high-level overview of telecom billing processes. If you've spent any time at all with telecom billing systems you'll be familiar with 95% of the information in this document, if not more.
   
   The material is appropriate for anyone who's getting involved with telecom billing for the first time or who has been working on the periphery of the billing systems and would like to know more.
   
   Don't expect a lot of detail - there can't be a lot in a document that contains only 31 pages of content written using large type and a lot of white space.
   
   For example, the entire section on Hardware and Software consists of the following paragraph:
   "The hardware usually includes high performance computers that operate proprietary software. Due to the complexity of hardware and software billing systems, continuous training is required in order to ensure quality services to the customers and to provide revenue assurance."



3. This is a very good starting guide for somebody not used to billing processeses. Moreover there is not so much books dealing with this discipline. I am lookinf forward the full version if there gonna any...



4. This 36 page book is very introductory in nature! If you want to know about Exchange Message Record (EMR) or Automatic Message Accounting (AMA) formats, it wraps it up in giving 4 lines of introduction for each. Not at all useful for professionals. Beginners should be able to find much more information on the net itself.. free of cost!



5. If you're getting started in billing, this book is an excellent introduction. It describes the key parts of billing systems and explains a lot of acronyms. Thanks to Avi Ofrane for writing such a good book.

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