You need set PhoneNumber, Alias and DeleteLength. Phone number isXXXT and Alias is rep:xxxIf your dialed phonenumber starts with yourset phone number, thefirst digits same as yourset phone number will bereplaced by the aliasnumber specified andNew phone number willbe send out.When you dial“0106228”, theSIP1 server willreceive“86106228”.If your dialed phonenumber starts with yourset phone number. Thephone will send out yourdialed phone numberadding suffix number.When you dial“147”, the SIP1server willreceive“1470011”.8.3.4 PHONE8.3.4.1 AUDIOIn this page, you can configure voice codec, input/output volume and so on.