![](http://pdfasset.owneriq.net/2/48/248eeeba-eb3a-43c9-903a-c22502d170e8/248eeeba-eb3a-43c9-903a-c22502d170e8-bg1c.png)
Chapter3–InstallingSoftware
28 MultiVOIP®Voice/FaxoverIPGateways
SettingCallSignaling
TherearethreechoicesforCallSignaling:H.323,SIPandSPP,the–SSmodelsonlysupportSIPandthe–FX
modelssupportSIPandSPP,butnotH.323.Itisbesttoselectoneoftheseastheprotocoltobeused,rather
thanmixingthem.SinglePortProtocol(SPP)
isanon‐standardprotocolcreatedbyMulti‐Te chthatallows
dynamicIPallocation.Generally,thedefaultsettingsdonotworkformostusers.Ifnecessaryyoucanchange
individualparameters.Chapter4providesdetailsforallsettings.