Telephony Systems - PBX White Papers
Fusion (FCCS): the Power of Networking
Overview PBX networking has evolved dramatically during the past one quarter century. The earliest PBX networking arrangements consisted of two switch nodes linked by a dedicated, private line facility, i.e., E&M tie trunk, to save on long distance toll charges. The primary benefit was cost savings. About twenty years ago more complex private tandem network configurations were made available, consisting of a meshed network of private line facilities linking tandem switch PBX nodes, main PBX nodes, and satellite systems. In-band signaling techniques supported a network dialing plan, and automatic alternate routing between nodes within the network. In addition to cost savings benefits using fixed tariff private line carrier facilities, customers enjoyed greater control over network operation and use. All of this was initially done using narrowband analog trunking facilities. The imminent arrival of digital T1-carrier trunk services in the mid-1980’s would soon change the rules for PBX networking, because in-band signaling would be replaced by out-of-band signaling. Analog Tie Line Network withTandem Tie Trunking
| Publisher | NEC USA | File Format | PDF, requires Acrobat Rdr 5 |
|---|---|---|---|
| Date Published | August 2003 | Downloads | 13 |
| Format | White Papers | ||
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