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Comity’s Technical Capabilities

Direct Inbound Dial (DID) service utilizes a local U.S. telephone number and aggregates all PSTN originated traffic which is delivered to our customers defined hand off via a Public IP, Private IP or TDM technology. Eliminate unexpected penalties and short duration costs.

Network Interfaces supported:

  • SIP
  • H.323
  • PRI / NFAS

CODECS supported:

  • G.711
  • G.729
  • T.38


  • Public and Private IP Address
  • Dedicated TDM Interconnection


RFC 3261 Compliance:

·This service is based on RFC 3261 – SIP Session Initiation Protocol and requires customer to conform to this standard.