Notre serveur vocal en application ACD peut se connecter aux IPBX en VoIP selon le protocole SIP sur le réseau local.

Gestion basique du SIP :
- RFC 3261 : SIP 2
- RFC 3264 : Offer/Answer Model with the Session Description Protocol (SDP)
- RFC 2833 : RTP Payload for DTMF Digits, Telephony Tones and Telephony Signals

Gestion des transferts :
- RFC 3515 : SIP Refer Method
- RFC 3891 : SIP "Replaces" Header
- RFC 3725 : Best Current Practices for Third Party Call Control (3pcc) in the SIP

Gestion des états des postes :
- RFC 3265 : SIP - Specific Event Notification
- RFC 3856 : A Presence Event Package for the Session Initiation Protocol
- RFC 3863 : Presence Information Data Format (PIDF)
- draft -ietf-sipping-dialog-package-06 : Dialog Package (Voir RFC 4235 : An INVITE-Initiated Dialog Event Package for the SIP)

Notification des messages vocaux :
- RFC 3842 : A Message Summary and Message Waiting Indication Event Package for the SIPMessagerie vocale & SVI
- RFC 4458 : Session Initiation Protocol (SIP) URIs for Applications as Voicemail and Interactive Voice Response (IVR) – Intégration T1/ 2007