Telecommunications system
First Claim
1. A network node for use in a packet data communications network, the node comprising means for detecting an emergency call indication in a received session activation request, and being adapted, in the event that an emergency call indication is detected, to set up a call even if normal call setup criteria are not met wherein said node is a SGSN element and wherein said SGSN element further adapted to create a packet session with a GGSN, including a further emergency call indication.
1 Assignment
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Accused Products
Abstract
There is described a system which, in a voice over IP radiotelecommunications system, allows a mobile station to make an emergency call, even though other calls would not be allowed at that time.
The mobile station includes an emergency call indication in the session activation request, and this is recognized by the network nodes, which then allow call set up.
203 Citations
7 Claims
- 1. A network node for use in a packet data communications network, the node comprising means for detecting an emergency call indication in a received session activation request, and being adapted, in the event that an emergency call indication is detected, to set up a call even if normal call setup criteria are not met wherein said node is a SGSN element and wherein said SGSN element further adapted to create a packet session with a GGSN, including a further emergency call indication.
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5. A method of operation of a node in a packet data communications network, the method comprising:
- detecting an emergency call indication in a received session activation request, and if an emergency call indication is detected, setting up a call even if normal call setup criteria are not met wherein said node is a SGSN element; and
if an emergency call indication is detected, creating a packet session with a GGSN, including a further emergency call indication. - View Dependent Claims (6, 7)
- detecting an emergency call indication in a received session activation request, and if an emergency call indication is detected, setting up a call even if normal call setup criteria are not met wherein said node is a SGSN element; and
Specification