7.1.2 Connection ...................................................................................................................295
7.1.3 Operation ......................................................................................................................296
7.1.4 Error Messages ............................................................................................................298
7.1.5 Restarting the KX-NS1000 ...........................................................................................300
7.1.6 Troubleshooting by Error Log .......................................................................................302
8 Networking Information .......................................................................305
8.1 Information about Using an IP Network ......................................................................306
8.1.1 Using a VoIP Network with the PBX .............................................................................306
8.1.2 DHCP (Dynamic Host Configuration Protocol) Server .................................................309
8.1.3 VLAN (Virtual LAN) ......................................................................................................310
8.1.4 Jitter Buffer ...................................................................................................................311
8.1.5 Voice Activity Detection (VAD) .....................................................................................311
8.1.6 Network Configuration ..................................................................................................312
8.1.7 Network Devices ..........................................................................................................316
8.1.8 QoS (Quality of Service) ...............................................................................................317
8.1.9 Network Time Protocol (NTP) ......................................................................................318
8.2 H.323 Trunks ..................................................................................................................319
8.2.1 Avoid Multiple IP Networks ...........................................................................................319
8.2.2 Gatekeeper ...................................................................................................................320
8.2.3 Bandwidth Assessment ................................................................................................320
8.2.4 Virtual VoIP Gateway Card Specifications ...................................................................323
8.3 SIP Trunks .....................................................................................................................324
8.3.1 IP Telephony Service ...................................................................................................324
8.3.2 SIP Requirements ........................................................................................................327
8.3.3 Router Requirements ...................................................................................................327
8.3.4 Bandwidth Requirements .............................................................................................327
8.3.5 Virtual SIP Trunk Card Specifications ..........................................................................329
8.4 Types of PBX Networks ................................................................................................330
8.4.1 One-look Network .........................................................................................................330
8.4.2 One-look Networking Survivability ................................................................................333
8.4.3 H.323 QSIG Network ....................................................................................................340
8.4.4 Working with Multiple PBX Networks ...........................................................................341
8.5 Port Security ..................................................................................................................342
8.6 Built-in Router ...............................................................................................................346
8.6.1 Built-in Router Overview ...............................................................................................346
8.6.2 WAN Connection ..........................................................................................................348
8.6.3 DHCP Relay Agent .......................................................................................................349
8.6.4 Dynamic DNS ...............................................................................................................350
8.6.5 DNS Client ....................................................................................................................351
8.6.6 Protocol Bridge—IPv6 Bridge .......................................................................................352
8.6.7 Protocol Bridge—PPPoE Bridge ..................................................................................352
8.6.8 MAC Address Clone .....................................................................................................353
8.6.9 Routing .........................................................................................................................354
8.6.10 Firewall .........................................................................................................................354
8.6.11 Firewall—Packet Filtering .............................................................................................355
8.6.12 Firewall—Stateful Packet Inspection ............................................................................356
8.6.13 Firewall—DoS Protection .............................................................................................356
8.6.14 Firewall—Other Security Settings ................................................................................357
8.6.15 Dynamic NAPT (IP masquerade) .................................................................................358
8.6.16 Static NAPT (Port Forwarding) .....................................................................................358
8.6.17 DMZ Host .....................................................................................................................359
8.6.18 VoIP Port Dynamic Setting ...........................................................................................359
8.6.19 IPsec Pass-through ......................................................................................................360
8.6.20 PPTP Pass-through ......................................................................................................361
18 Installation Manual
Table of Contents