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The State of Voice Communications

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After reading this chapter, you should have a good understanding of the voice communications services currently available in traditional telephony environments. This chapter discusses Telephony Systems, Trunk Circuit, and Calling Features & Services.
This chapter is from the book

This chapter is from the book

The State of Voice Communications

After reading this chapter, you should have a good understanding of the voice communications services currently available in traditional telephony environments. This chapter discusses Telephony Systems, Trunk Circuit, and Calling Features & Services.

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