T1 Dedicated Voice

Essay by djapan5555University, Bachelor'sA+, February 2006

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Our company has decided to go with the T1 dedicated voice system for our companies communication needs and for companies considering the many alternatives for long distance service, there are two main formats commonly used to transmit long distance voice traffic. The most ubiquitous form of long distance calling is the switched call. These calls originate from regular POTS (Plain Old Telephone Service) lines and are routed through the local telephone company's central switch. Dedicated long distance is transmitted over a digital T1 line from the customer's location through the local telephone company's central office - but not through the switch - where it connects directly to the carrier's voice network. This direct connection to the carrier allows for considerably lower per minute rates but because the carrier charges a monthly fee for the T1 line, the volume of calls must be great enough to produce a savings.

Since we will have a high volume of calls the saving will be beneficial to our company. This information was gathered at: www. T1-T3-DS1-Line.com


T1 or Trunk Level 1, is a digital transmission link with a total signaling speed of 1.544 Mbps. Since the development of T1 in 1957 by AT&T's Bell Labs, it has become the building block of dedicated voice and data service in North America. T1, also know as DS1, is part of a progression of digital transmission pipes - a hierarchy known generically as DS, or Digital Signal Level. This information was gathered at: www.T1-T-3-DS1-Line.com

T1 service can be delivered to the end user in either a channelized format or an unchannelized raw bit stream. North American carriers typically deliver T1 split into 24 56/64 kbps channels. These channels can be used to transmit voice (typically one conversation per channel) or data...