System and method for dynamically varying integrated services digital network (isdn) interface bandwidth
First Claim
1. A method for dynamically varying bandwidth of a primary integrated services digital network (ISDN) interface, the method comprising:
- (a) requesting, over a data (D) channel between an end office and a central office switch, allocation of at least one first bearer (B) channel of a first primary rate ISDN interface;
(b) receiving, over the D channel, notification of allocation of the at least one first B channel and, in response, sending data over the at least one first B channel;
(c) monitoring a relationship between a first bandwidth demand parameter and first and second thresholds;
(d) requesting, over the D channel, allocation of at least one second B channel of the first primary rate ISDN interface in response to a predetermined relationship between the first bandwidth demand parameter and the first threshold;
(e) receiving, over the D channel, notification of allocation of the at least one second B channel, and, in response, sending data over the at least one second B channel; and
(f) releasing the at least one second B channel in response to a predetermined relationship between the first bandwidth demand parameter and the second threshold.
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Accused Products
Abstract
A method for dynamically varying bandwidth of a primary rate ISDN interface includes requesting, over a data (D) channel, allocation of at least one first B channel of the primary rate ISDN interface. When notification of allocation of the first B channel is received, over the D channel, data is sent over the first B channel. A relationship is monitored between a first bandwidth demand parameter and first and second threshold values. If a predetermined relationship exists between the first bandwidth demand parameter and the first threshold value, allocation of at least one second B channel of the primary rate ISDN interface is requested. In response to receiving notification of allocation of the second channel, data is sent over the second B channel. The second B channel is released in response to a relationship between the first bandwidth demand parameter and a second threshold. A hyper primary rate ISDN interface (HPRI) defines a virtual primary rate interface (PRI) that does not include a predetermined number of B channels. A bandwidth user can statically request any number of the available bearer channels. Alternatively, B channels can be dynamically allocated or de-allocated based on demand.
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Citations
37 Claims
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1. A method for dynamically varying bandwidth of a primary integrated services digital network (ISDN) interface, the method comprising:
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(a) requesting, over a data (D) channel between an end office and a central office switch, allocation of at least one first bearer (B) channel of a first primary rate ISDN interface; (b) receiving, over the D channel, notification of allocation of the at least one first B channel and, in response, sending data over the at least one first B channel; (c) monitoring a relationship between a first bandwidth demand parameter and first and second thresholds; (d) requesting, over the D channel, allocation of at least one second B channel of the first primary rate ISDN interface in response to a predetermined relationship between the first bandwidth demand parameter and the first threshold; (e) receiving, over the D channel, notification of allocation of the at least one second B channel, and, in response, sending data over the at least one second B channel; and (f) releasing the at least one second B channel in response to a predetermined relationship between the first bandwidth demand parameter and the second threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for dynamically varying bandwidth of a primary rate integrated services digital network (ISDN) interface, the method comprising:
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(a) requesting, over a data (D) channel between an end office and a central office switch, allocation of at least one first bearer (B) channel of a first primary rate ISDN interface; (b) receiving, over the D channel, notification of allocation of the at least one first B channel and, in response, transmitting data over the at least one first B channel; (c) monitoring a relationship between a first bandwidth demand parameter and first threshold; (d) requesting, over the D channel, at least one second B channel of the first primary rate ISDN interface in response to a predetermined relationship between the first bandwidth demand parameter and the first threshold; (e) receiving, over the D channel notification of allocation of the at least one second B channel, and, in response, transmitting data over the at least one second B channel and starting a timer; and (f) releasing the at least one second B channel in response to the timer reaching a predetermined value. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A system for dynamically varying bandwidth of a primary rate integrated services digital network (ISDN) interface, the system comprising:
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(a) a bandwidth watcher associated with a first network element for determining whether a first predetermined relationship exists between a first bandwidth demand parameter and a first threshold; and (b) a connection maker/breaker for communicating with the bandwidth watcher and for requesting, over a data (D) channel, allocation of at least one bearer (B) channel of a first primary rate ISDN interface from a central office switch in response to receiving notification from the bandwidth watcher that the first predetermined relationship exists between the bandwidth demand parameter and the first threshold; wherein the bandwidth watcher is adapted to determine whether a second predetermined relationship exists between the first bandwidth demand parameter and a second threshold lower than the first threshold. - View Dependent Claims (28, 29, 30, 31, 32)
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33. A computer program product comprising computer executable instructions embodied in a computer readable medium for performing steps comprising:
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(a) determining whether a first predetermined relationship exists between a first bandwidth demand parameter associated with a first network element and a first threshold; (b) requesting, over a data (D) channel, allocation of at least one bearer (B) channel of a first primary rate integrated services digital network (ISDN) interface from a central office switch in response to determining that the first predetermined relationship exists; and (c) determining whether a second predetermined relationship exists between the first bandwidth demand parameter and a second threshold lower than the first threshold. - View Dependent Claims (34, 35, 36, 37)
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Specification