Support of Non-Secure Warning Tones on Packet-Switched Networks, Particularly Across Multiple Security Domains

摘要

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.

主权项

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; and establishing, by the MLS voice gateway, a call from the source phone to the destination phone upon acknowledgement of the local generation of the non-secure warning tone by the source phone.