Automatic provisioning of trunking and routing parameters in a telecommunications network
First Claim
1. An arrangement for provisioning call processing parameters in a telecommunications network, said network comprising a plurality of interconnected switches, said arrangement comprising:
- means, responsive to an equipment change affecting particular trunking or routing parameters associated with one of said plurality of switches, for changing in said one of said plurality of switches call processing routing data associated with said change, andmeans, in said one of said plurality of switches and responsive to said change, for forming a message characterizing the change in said associated call processing routing data and then sending said message to each of the other ones of said plurality of switches.
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Abstract
A telecommunication network may be arranged in accord with the invention so that a change in provisioning data occurring at one element of the network is automatically supplied to the other elements of the network, thereby eliminating the need of having a network administration facility to communicate manually the change to the other network elements. For example, if a local central office switch is rehomed from a first toll switch to a second toll switch, then the first and second toll switches form messages respectively characterizing the rehome and then send the messages to each of the other network toll switches so that the other toll switches may update their respective routing and trunking data relating to the rehomed switch. The network is also arranged to implement a rule-based, end-to-end routing scheme which automatically selects a routing path from multiple candidates based on (a) class-of-service parameters and (b) availability of network capacity. The automatic selection of a routing path thus replaces the provisioning of routing data in the toll switches, which data was priorly needed to select the appropriate routing path.
115 Citations
25 Claims
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1. An arrangement for provisioning call processing parameters in a telecommunications network, said network comprising a plurality of interconnected switches, said arrangement comprising:
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means, responsive to an equipment change affecting particular trunking or routing parameters associated with one of said plurality of switches, for changing in said one of said plurality of switches call processing routing data associated with said change, and means, in said one of said plurality of switches and responsive to said change, for forming a message characterizing the change in said associated call processing routing data and then sending said message to each of the other ones of said plurality of switches. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. An arrangement for provisioning call processing parameters in a telecommunications network, said network comprising a plurality of interconnected switches, said arrangement comprising;
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means, responsive to a change in particular equipment associated with one of said plurality of switches, for changing in said one of said plurality of switches call processing routing data associated with said particular equipment, and means, in said one of said switches and responsive to said changing, for forming a message characterizing the change in said associated call processing routing data and then sending said message to each of the other ones of said plurality of switches.
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20. Apparatus comprising:
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a telecommunications network formed from a plurality of interconnected switches, means, responsive to a change in a connection between first and second ones of said switches, for causing said first and second ones of said switches to form respective messages characterizing said change as it respectively pertains to said first and second switches, and means in each of said first and second switches for sending the associated message to each of the other ones of said switches.
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21. A method of provisioning call processing parameters in a telecommunications network, said network comprising a plurality of interconnected switches, said method comprising the steps of:
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responsive to an equipment change affecting particular trunks associated with one of said plurality of switches, changing said call processing parameters in said one of said plurality of switches, and forming a message characterizing said change, and responsive to the forming of said message, sending said message to each of the other ones of said switches.
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22. A method of forwarding a telephone call in a telecommunications network comprising a plurality of switches, said call being forwarded to a Network Addressable Destination (NAD), said method comprising the steps of:
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(a) selecting a direct route from a first switch to said NAD using a last successful direct route and forwarding said call to said NAD via said last successful direct route, (b) if said call cannot be forwarded to said NAD via said last p successful direct route from said first switch to said NAD, then identifying a second switch having a direct route to said NAD in which the latter direct route was previously used to route a call to said NAD successfully and forwarding said call to said second switch, and, if the routing of said call via said second switch is successful, then storing the identity of said second switch as the new successful direct route, and (c) if said call cannot be forwarded to said NAD via a direct route of said second switch, then identifying a number of other switches each having a direct route to said NAD and forwarding said call to each of said other switches, in turn, until said call is forwarded successfully to said NAD, and, if the routing said call via one of said other switches is successful, then storing the identity of said one of said other switches as the new successful direct route. - View Dependent Claims (23, 24)
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25. A method of forwarding a telephone call in a telecommunications network comprising a plurality of switches, said call being forwarded to a Network Addressable Destination (NAD), said method comprising the steps of:
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(a) selecting a direct route from a first switch to said NAD and forwarding said call to said NAD via said direct route, (b) if said call cannot be forwarded to said NAD via said direct route from said first switch to said NAD, then identifying a second switch having a direct route to said NAD in which the latter direct route was previously used to route a call to said NAD and forwarding said call to said second switch, and (c) if said call cannot be forwarded to said NAD via a direct route of said second switch, then identifying a number of other switches each having a direct route to said NAD and forwarding said call to each of said other switches, in turn, until said call is forwarded successfully to said NAD.
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Specification