Support of non-secure warning tones on packet-switched networks, particularly across multiple security domains
First Claim
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1. A method for supporting non-secure warning tones on packet-switched networks comprising the steps of:
- receiving, by a Multi-Level Secure (MLS) voice gateway, a call attempt from a source phone to a destination phone;
checking, by the MLS voice gateway, if a connection of security domains of the source phone and the destination phone via the MLS voice gateway is allowed;
checking, by the MLS voice gateway, if a generation of a non-secure warning tone locally by the source phone is required;
receiving, by the MLS voice gateway, an acknowledgement of a local generation of the non-secure warning tone by the source phone; and
establishing, by the MLS voice gateway, a cross-security domain call from the source phone to the destination phone.
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Abstract
A method for supporting non-secure warning tones on packet-switched networks involves receiving a call attempt from a source phone to a destination phone, checking if a connection of the security domains of the source phone and the destination phone via a MLS voice gateway is allowed, and checking if a generation of a non-secure warning tone locally by the source phone is required. A call is established from the source phone to the destination phone upon acknowledgement of the local generation of the non-secure warning tone by the source phone.
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Citations
15 Claims
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1. A method for supporting non-secure warning tones on packet-switched networks comprising the steps of:
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receiving, by a Multi-Level Secure (MLS) voice gateway, a call attempt from a source phone to a destination phone; checking, by the MLS voice gateway, if a connection of security domains of the source phone and the destination phone via the MLS voice gateway is allowed; checking, by the MLS voice gateway, if a generation of a non-secure warning tone locally by the source phone is required; receiving, by the MLS voice gateway, an acknowledgement of a local generation of the non-secure warning tone by the source phone; and establishing, by the MLS voice gateway, a cross-security domain call from the source phone to the destination phone. - View Dependent Claims (2, 3, 4, 5)
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6. A Multi-Level Secure (MLS) voice gateway for establishing a call between a source phone and a destination phone over a packet-switched network comprising:
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means for receiving a call attempt from the source phone to the destination phone; means for checking if a connection of security domains of the source phone and the destination phone via the MLS voice gateway is allowed; means for checking if a generation of a non-secure warning tone locally by the source phone is required; means for receiving an acknowledgement of a local generation of the non-secure warning tone by the source phone; and means for establishing a call from the source phone to the destination phone when the acknowledgement of the local generation of the non-secure warning tone by the source phone is received. - View Dependent Claims (7, 8, 9, 10)
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11. A non-transitory computer-readable medium including processor executable instructions, which when executed by a processor, causes the processor to:
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receive a call attempt from a source phone to a destination phone; check if a connection of security domains of the source phone and the destination phone via a Multi-Level Secure (MLS) voice gateway is allowed; check if a generation of a non-secure warning tone locally by the source phone is required; receive an acknowledgement of a local generation of the non-secure warning tone by the source phone; and establish a call from the source phone to the destination phone. - View Dependent Claims (12, 13, 14, 15)
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Specification