Enterprise SIP Trunking to the PSTN
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By AGN Networks
While all the IP telephony vendors have embraced SIP proxys and end-points, service providers are starting to offer SIP trunking between facilities. SIP trunking eliminates gateways, legacy PRI and POTS lines enabling end-to-end SIP connectivity between sites, reducing WAN charges and extending features. SIP functionality includes features such as Instant Messaging, Presence Management, centralized call control, and simplified Moves, Adds and Changes. In this white paper AGN Networks describes SIP trunking and the value of building a multi-site IP telephony with SIP trunks.
