| http://www.w3.org/ns/prov#value | - An example of a commercially available device that could be used as media terminal adapter 138 is the Cisco ATA-186 Analog Telephone Adapter, available from Cisco Systems, Inc. [0039] Media terminal adapter 138 may also include a user agent 144 that can use protocols such as SIP and/or H.323 for establishing communication sessions through packet-switched network 122.
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