Network facsimile apparatus and network facsimile system
First Claim
1. A network facsimile apparatus, serving as a caller that establishes a session based on a Session Initiation Protocol to conduct image data communicating operations with other apparatuses serving as callees including a first callee and a second callee, comprising:
- a control section to suspend an operation for transmitting image data to the first callee when the first callee sends a communication incapable signal back to the caller in response to a session establishment request directed to the first callee and originally issued by the caller;
a storage section to store a first IP address of the first callee;
a network interface control section that receives a session establishment request sent from the second callee after the first IP address of the first callee is stored in the storage section, and then, sends a session establishment response back to the second callee; and
a comparing section to compare the first IP address of the first callee, stored in the storage section, with a second IP address of the second callee, when image data are not transmitted to the caller from the second callee within a predetermined time interval after the session establishment response is sent back to the second callee;
wherein, when the control section determines that the first IP address and the second IP address coincide with each other, based on a comparison result of the comparing section, the control section conducts controlling operations so as to transmit the image data, transmission of which is currently suspended, to the second callee.
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Accused Products
Abstract
There is described a network facsimile apparatus, which makes it possible to quickly complete the transmitting operation of reserved image data whose transmission is temporarily suspended due to the BUSY status of the receiver side, etc. The apparatus, serving as a caller that conducts image data communicating operations with other apparatuses serving as callees based on a Session Initiation Protocol, includes a control section to suspend an operation for transmitting image data to the first callee; a storage section to store the first IP address of the first callee; a network interface control section; and a comparing section to compare the first IP address with the second IP address. When the control section determines that the first IP address and the second IP address coincide with each other, the control section transmits the reserved image data, transmission of which is currently suspended, to the second callee.
7 Citations
19 Claims
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1. A network facsimile apparatus, serving as a caller that establishes a session based on a Session Initiation Protocol to conduct image data communicating operations with other apparatuses serving as callees including a first callee and a second callee, comprising:
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a control section to suspend an operation for transmitting image data to the first callee when the first callee sends a communication incapable signal back to the caller in response to a session establishment request directed to the first callee and originally issued by the caller; a storage section to store a first IP address of the first callee; a network interface control section that receives a session establishment request sent from the second callee after the first IP address of the first callee is stored in the storage section, and then, sends a session establishment response back to the second callee; and a comparing section to compare the first IP address of the first callee, stored in the storage section, with a second IP address of the second callee, when image data are not transmitted to the caller from the second callee within a predetermined time interval after the session establishment response is sent back to the second callee; wherein, when the control section determines that the first IP address and the second IP address coincide with each other, based on a comparison result of the comparing section, the control section conducts controlling operations so as to transmit the image data, transmission of which is currently suspended, to the second callee. - View Dependent Claims (2, 3, 4, 5, 6, 7, 19)
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8. A network facsimile apparatus, serving as a callee that establishes a session based on a Session Initiation Protocol to conduct an image data communicating operation with another apparatus serving as a caller, comprising:
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a network interface control section that receives a session establishment request sent from the caller; a control section to control the network interface control section so that a communication incapable signal is sent back to the caller in response to the session establishment request received by the network interface control section when the callee is currently in a state incapable of establishing the session; and a storage section to store an IP address of the caller; wherein, when the callee currently enters in another state capable of establishing the session with the caller, the control section conducts controlling operations so that the callee calls the caller based on the IP address stored in the storage section through the network interface control section. - View Dependent Claims (9, 10, 17)
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11. A network facsimile system, comprising:
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a network facsimile apparatus serving as a caller; a first network facsimile apparatus serving as a first callee; and a second network facsimile apparatus serving as a second callee; wherein each of the network facsimile apparatus, the first network facsimile apparatus and the second network facsimile apparatus establishes a session based on a Session Initiation Protocol to conduct image data communicating operations with other apparatuses coupled to the network facsimile system; and wherein the network facsimile apparatus comprises; a control section to suspend an operation for transmitting image data to the first network facsimile apparatus serving as the first callee when the first callee sends a communication incapable signal back to the network facsimile apparatus serving as the caller in response to a session establishment request directed to the first callee and originally issued by the caller; a storage section to store a first IP address of the first callee; a network interface control section that receives a session establishment request sent from the second callee after the first IP address of the first callee is stored in the storage section, and then, sends a session establishment response back to the second callee; a comparing section to compare the first IP address of the first callee, stored in the storage section, with a second IP address of the second callee, when image data are not transmitted to the caller from the second callee within a first predetermined time interval after the session establishment response is sent back to the second callee; and wherein the first network facsimile apparatus, comprises; a first network interface control section that receives a session establishment request sent from the caller; a first control section to control the first network interface control section so that a communication incapable signal is sent back to the caller in response to the session establishment request received by the first network interface control section when the first callee is currently in a state incapable of establishing the session; and a first storage section to store an IP address of the caller; and wherein, when the control section of the network facsimile apparatus determines that the first IP address and the second IP address coincide with each other, based on a comparison result of the comparing section, the control section conducts controlling operations so as to transmits the image data, transmission of which is currently suspended, to the second callee; and wherein, when the first callee currently enters in another state capable of establishing the session with the caller, the first control section of the first network facsimile apparatus conducts controlling operations so that the first callee calls the caller based on the IP address of the network facsimile apparatus, stored in the storage section, through the first network interface control section. - View Dependent Claims (12, 13, 14, 15, 16, 18)
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Specification