Chapter4–ConfiguringYourMultiVOIP
MultiVOIP®Voice/FaxoverIPGateways 57
CallSignaling
ThreetypesofCallSignalingareavailable:H.323,SIPandSPP.Eachtypehasfeaturesthatmaymakeitmore
appealingtousethantheothers,dependingonyourneeds.The–SSand–FXmodelsdonotsupportH.323
signaling.
H.323
H.323isanITU‐Trecommendedsetofstandards foraudioand videocommunications.Thefieldsforthis
windowaredefinedinthetablebelow.