Conference system for dial-out telephone calls

Details Conference system for dial-out telephone calls Conference system for dial-out telephone calls

1995-08-30

1997-06-10

Zele, Krista M.

Telephonic communications

Special services

Conferencing

370260, 379158, 379216, 379219, H04M 342, H04M 100, H04M 700, H04Q 1104

Patent

active

056384343

ABSTRACT:
A conference system provides dial-out conference calls to participants who use various virtual private network dialing plans as well as place non-plan calls, such as Direct Distance Dialing and International Direct Distance Dialing. The conference system recognizes non-identical VPN dialing plans, as well as PSTN numbers, which all originate on a single Dedicated Access Line (DAL). When a dial-out conference call is originated on a DAL, a switch performs a database query to determine a VPN dialing plan. Based on a code provided along with the dialed telephone number, the database identifies the number as belonging to a particular VPN dialing plan and translates it into a physical termination. Alternatively, if the code indicates that the number does not belong to a VPN dialing plan, i.e, a DDD or IDDD number, it is unmodified by the database. Either translated or untranslated number is then returned to the switch for subsequent network routing to a physical termination.

REFERENCES:
patent: 4796293 (1989-01-01), Blinken et al.
patent: 5408526 (1995-04-01), McFarland et al.
patent: 5483587 (1996-01-01), Hogan et al.

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