SIP Trunks with major carrier

Unanswered Question
May 21st, 2008
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We utilize ATT MPLS (MIS) network and I'm looking into possible solutions using a SIP trunk for each office location worlwide. We currently have one or multiple PRI's at each location. We are running Call Mgr 4.1.3 SR6 with H323 gateways. What are the benefits with the SIP trunks? Can you do least cost routing with SIP trunks? What are the difficulties/known issues with SIP trunks (ie. ATT solutions). Any other info is appreciates

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