Example: air traffic controller
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CenturyLink Advanced Voice Services Guide
www.centurylink.com© CenturyLink, Inc. All Rights Reserved. v1.080811 CONFIDENTIAL Page 1 of 7 CenturyLink Advanced Voice Services Guide IP Long Distance Service IP …
CenturyLink Advanced Voice Services Guide
www.centurylink.com© CenturyLink, Inc. All Rights Reserved. v1.080811 CONFIDENTIAL Page 2 of 7 Internet Protocol (“IP”) VOICE SERVICES 1.0 General Service Descriptions IP Long ...