User's Guide .......................................................................................................................................25

Introducing the ISG50 .............................................................................................................................27

Features and Applications .......................................................................................................................37

Web Configurator ....................................................................................................................................43

Installation Setup Wizard ........................................................................................................................59

Quick Setup .............................................................................................................................................69

Configuration Basics ...............................................................................................................................87

General Tutorials ...................................................................................................................................107

PBX Tutorials ........................................................................................................................................135

Technical Reference ........................................................................................................................183

Dashboard .............................................................................................................................................185

Monitor ..................................................................................................................................................195

Registration ...........................................................................................................................................229

Interfaces ..............................................................................................................................................233

Trunks ...................................................................................................................................................281

Policy and Static Routes .......................................................................................................................289

Routing Protocols ..................................................................................................................................302

Zones ....................................................................................................................................................313

DDNS ....................................................................................................................................................317

NAT .......................................................................................................................................................323

HTTP Redirect ......................................................................................................................................331

ALG .......................................................................................................................................................335

IP/MAC Binding .....................................................................................................................................341

Authentication Policy .............................................................................................................................347

Firewall ..................................................................................................................................................353

IPSec VPN ............................................................................................................................................367

Bandwidth Management .......................................................................................................................397

ADP ....................................................................................................................................................... 411

Global PBX Settings ..............................................................................................................................429

Voice Interfaces .....................................................................................................................................448

Extension Management ........................................................................................................................453

Outbound Trunk Group .........................................................................................................................477

Auto-attendant .......................................................................................................................................503

LCR .......................................................................................................................................................519

Group Management ..............................................................................................................................526

Call Services .........................................................................................................................................532

Call Recording .......................................................................................................................................544

ISG50 User's Guide