Preface ................................................................................................................................................................... III
Welcome ...........................................................................................................................III
About this manual .............................................................................................................III
Intended audience.............................................................................................................III
1.1 Overview .......................................................................................................................1
1.2 Product Features ..........................................................................................................2
1.3.2 VGW-1620FS ................................................................................................................... 5
1.4 Ports and Connectors ...................................................................................................9
1.4.1 VGW-420FS ..................................................................................................................... 9
1.4.2 VGW-820FS ................................................................................................................... 10
1.4.3 VGW-1620FS ................................................................................................................. 11
1.4.4 VGW-2420FS ................................................................................................................. 12
1.4.5 VGW-3220FS ................................................................................................................. 13
2 Basic Operations ................................................................................................................................................ 15
2.2 Direct IP Calls ............................................................................................................. 15
2.3 Call Holding ................................................................................................................ 16
2.4 Call Waiting ................................................................................................................ 16
2.5 Call Transfer ............................................................................................................... 16
2.5.1 Blind Transfer ............................................................................................................... 16
4-/8-/16-/24-/32-Port SIP Internet Telephony Gateway
Contents
IV