Internode routing for a telephone system
First Claim
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1. An internode routing for an emergency telephone system, comprising:
- first switch means for routing emergency telephone calls;
second switch means for routing emergency telephone calls;
means for defining emergency service zones for each of the first and second switch means; and
means in the first and second switch means for transferring a telephone call placed to the first switch means to the second switch means for completion to a public safety answering point responsive to a condition of the public safety answering point being located in the emergency service zone associated with the second switch means, wherein the second switch means includes means for determining whether the first or second switch means should service the emergency service zone associated with a telephone number of a calling party.
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Abstract
An internode routing for an emergency telephone system (14) having a first switch (16) for routing telephone calls, a second switch (18) for routing telephone calls, a device (16 or 18) for defining emergency service zones for each of the first and second switches (16 or 18), and a device (16) for transferring a telephone call placed to the first switch (16) to the second switch (18) for completion to a public safety answering point responsive to the condition of the public safety answering point being located in the emergency service zone associated with the second switch (18).
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Citations
12 Claims
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1. An internode routing for an emergency telephone system, comprising:
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first switch means for routing emergency telephone calls; second switch means for routing emergency telephone calls; means for defining emergency service zones for each of the first and second switch means; and means in the first and second switch means for transferring a telephone call placed to the first switch means to the second switch means for completion to a public safety answering point responsive to a condition of the public safety answering point being located in the emergency service zone associated with the second switch means, wherein the second switch means includes means for determining whether the first or second switch means should service the emergency service zone associated with a telephone number of a calling party. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification