Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2001-02-27
2008-08-12
Nguyen, Hanh (Department: 2616)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
C370S298000, C370S352000, C370S389000, C379S088130, C379S088240, C379S093350, C709S203000
Reexamination Certificate
active
07411984
ABSTRACT:
Telephone tones such as dialing tones and busy or engaged tones differ in different countries and in traditional telephone networks it has been possible to deal with this because national telephone networks have been used. However, with the advent of next generation communications networks in which telephone services are transmitted over a packet network, a need has arisen to manage telephone tones in a more sophisticated manner. To address this, a tone service provides telephone tone information to tone recipients such as media gateways, session initiation protocol (SIP) phones and virtual media gateways. In the event that a new tone recipient is added to the packet network, the tone service is able to automatically provide appropriate telephone tone information to that new tone recipient. Similarly, if telephone tones need to be upgraded or rolled back, the tone service is able to automatically provide appropriate telephone tone information to each of the tone recipients.
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Moth Albert T
Parton William
Barnes & Thornburg LLP
Nguyen Hanh
Nortel Networks Limited
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