Today our agent visit us.They are very interested in our model:KNZD-43，KNZD-42VR，KNZD-47VR.Especially the SIP dispatching system,it is very impressive and customer make test and learn the information carefully.Our system could connected with most PABX, PBX and PAX systems:HUAWEI,SEMMENS,TADIRAN TELECOM,NEC,LG,AYAYA,ZTE and etc.