7 Troubleshooting ...................................................................................257
7.1 Troubleshooting ............................................................................................................258
7.1.1 Installation ....................................................................................................................258
7.1.2 Connection ...................................................................................................................261
7.1.3 Operation ......................................................................................................................262
7.1.4 Error Messages ............................................................................................................264
7.1.5 Restarting the PBX .......................................................................................................266
7.1.6 Troubleshooting by Error Log .......................................................................................268
8 Networking Information .......................................................................271
8.1 Information about Using an IP Network ......................................................................272
8.1.1 Using a VoIP Network with the PBX .............................................................................272
8.1.2 DHCP (Dynamic Host Configuration Protocol) Server .................................................275
8.1.3 VLAN (Virtual LAN) ......................................................................................................276
8.1.4 Jitter Buffer ...................................................................................................................277
8.1.5 Voice Activity Detection (VAD) .....................................................................................277
8.1.6 Network Configuration ..................................................................................................278
8.1.7 Network Devices ..........................................................................................................282
8.1.8 QoS (Quality of Service) ...............................................................................................283
8.1.9 Network Time Protocol (NTP) ......................................................................................284
8.2 Information about Using a One-look Network ............................................................285
8.2.1 One-Look Network with NS-Net ...................................................................................285
8.3 H.323 CO Lines ..............................................................................................................287
8.3.1 Avoid Multiple IP Networks ...........................................................................................287
8.3.2 Gatekeeper ...................................................................................................................288
8.3.3 Bandwidth Assessment ................................................................................................288
8.3.4 Virtual VoIP Gateway Card Specifications ...................................................................291
8.4 SIP CO Lines ..................................................................................................................292
8.4.1 IP Telephony Service ...................................................................................................292
8.4.2 SIP Requirements ........................................................................................................295
8.4.3 Router Requirements ...................................................................................................295
8.4.4 Bandwidth Requirements .............................................................................................295
8.4.5 Virtual SIP CO Line Card Specifications ......................................................................297
8.5 Types of PBX Networks ................................................................................................298
8.5.1 H.323 QSIG Network ....................................................................................................298
8.6 Port Security ..................................................................................................................299
9 Appendix ...............................................................................................303
9.1 System Prompt Languages ..........................................................................................304
9.2 Revision History ............................................................................................................305
9.2.1 PFMPR Software File Version 004.1xxxx ....................................................................305
9.2.2 PFMPR Software File Version 004.2xxxx ....................................................................305
9.2.3 PFMPR Software File Version 004.3xxxx ....................................................................306
9.2.4 PFMPR Software File Version 004.4xxxx ....................................................................306
14 Installation Manual Document Version 2016-03
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