Method and system for establishing a multimedia connection...

Details Method and system for establishing a multimedia connection... Method and system for establishing a multimedia connection...

2007-12-18

2010-10-12

Nguyen, Quynh H (Department: 2614)

Telephonic communications

Plural exchange network or interconnection

Interexchange signalling

C379S221100, C379S221080, C379S221090, C379S221120, C370S373000, C370S377000, C370S384000, C370S385000, C370S522000, C370S524000

Reexamination Certificate

active

07813492

ABSTRACT:
The present invention relates to a method and system for establishing a connection to a terminal device, wherein a user capability information defining supported types of information streams is set in a compatibility information element within an outband signaling message, and a capability negotiation is performed by transmitting said outband signaling message via an outband control channel. The code or user capability information may be set at the terminal device or at an intermediate network element based on a subscriber profile information obtained from a subscriber database. Thereby, the user capability, such as a multimedia session composition, can be already negotiated or handled during the outband call setup phase, and a corresponding inband negotiation can be avoided.

REFERENCES:
patent: 5930264 (1999-07-01), Nguyen
patent: 6671367 (2003-12-01), Graf et al.
patent: 0 817 452 (1998-01-01), None
patent: WO 00/70885 (2000-11-01), None
Handley et al, “RFC 2543 SIP: Session Initiation Protocol”, Request for Comment, Online, Mar. 1999, pp. 1-153, XP002173547, network working group retrieved from Internet: URL:www.ietf.org retried on Jul. 24, 2001.
Gary A. Thom, “H. 323: The Multimedia Communications Standard for Local Area Networks”, IEEE Communications Magazine, IEEE service Center, NJ, USA, vol. 34, No. 12, Dec. 1, 1996, pp. 52-56, XP000636454.
Dalgic et al, “Comparison of H.323 and SIP for IP Telephony Signaling”, Proceedings of the SPIE, 1999, XP000949838.

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