5.8.3 Installing SIP Phones at a Remote Site .......................................................................260
5.8.4 Installing IP Phones at a Remote Site with a Built-in Media Relay Gateway ...............266
5.9
Configuration of Users .................................................................................................275
5.10 Programming E-mail Integration for UM Voice ..........................................................277
5.11 Automatic Configuration of Mailboxes .......................................................................281
6 Methods of Stacking Expansion Units ...............................................283
6.1 Methods of Stacking Expansion Units ........................................................................284
7 Troubleshooting ...................................................................................287
7.1 Troubleshooting ............................................................................................................288
7.1.1 Installation ....................................................................................................................288
7.1.2 Connection ...................................................................................................................291
7.1.3 Operation ......................................................................................................................292
7.1.4 Error Messages ............................................................................................................294
7.1.5 Restarting the PBX .......................................................................................................296
7.1.6 Troubleshooting by Error Log .......................................................................................298
8 Networking Information .......................................................................301
8.1 Information about Using an IP Network ......................................................................302
8.1.1 Using a VoIP Network with the PBX .............................................................................302
8.1.2 DHCP (Dynamic Host Configuration Protocol) Server .................................................305
8.1.3 VLAN (Virtual LAN) ......................................................................................................306
8.1.4 Jitter Buffer ...................................................................................................................307
8.1.5 Voice Activity Detection (VAD) .....................................................................................307
8.1.6 Network Configuration ..................................................................................................308
8.1.7 Network Devices ..........................................................................................................312
8.1.8 QoS (Quality of Service) ...............................................................................................313
8.1.9 Network Time Protocol (NTP) ......................................................................................314
8.2 Information about Using One-look Network ...............................................................315
8.2.1 One-Look Network with NS-Net ...................................................................................315
8.3 H.323 Trunks ..................................................................................................................317
8.3.1 Avoid Multiple IP Networks ...........................................................................................317
8.3.2 Gatekeeper ...................................................................................................................318
8.3.3 Bandwidth Assessment ................................................................................................318
8.3.4 Virtual VoIP Gateway Card Specifications ...................................................................321
8.4 SIP Trunks .....................................................................................................................322
8.4.1 IP Telephony Service ...................................................................................................322
8.4.2 SIP Requirements ........................................................................................................325
8.4.3 Router Requirements ...................................................................................................325
8.4.4 Bandwidth Requirements .............................................................................................325
8.4.5 Virtual SIP Trunk Card Specifications ..........................................................................327
8.5 Types of PBX Networks ................................................................................................328
8.5.1 H.323 QSIG Network ....................................................................................................328
8.6 Port Security ..................................................................................................................329
9 Appendix ...............................................................................................333
9.1 System Prompt Languages ..........................................................................................334
9.2 Revision History ............................................................................................................335
9.2.1 PFMPR Software File Version 004.1xxxx ....................................................................335
9.2.2 PFMPR Software File Version 004.2xxxx ....................................................................335
Installation Manual 15
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