用户手册 — Snom 4S

目录

• Overview

  5
• Applications

  6
• Features

  6
• Architecture

  9
• The NAT Filter and SIP

  9
• NAT

  10
• How does NAT work?

  11
• Symmetrical RTP

  11
• Signalling SIP

  11
• Media RTP

  12
• Classification of User Agents

  12
• Probing Media Paths

  13
• The Role of the NAT Filter

  13
• Optimizing the Media Path for Symmetrical NAT

  14
• SBC Behaviour

  15
• Registering

  15
• RTP Relay

  16
• Scaling and Redundancy

  18
• Detecting the right NAT Filter

  19
• Requirements on User Agents

  20
• Non NAT-Aware User Agents

  20
• STUN/ICE-Aware User Agents

  20
• Defining the Maximum Session Time

  21
• Installation

  23
• Windows

  23
• Linux

  28
• Configuration

  31
• Logging In

  31
• Port Binding

  31
• System Settings

  33
• Logging

  33
• Preparing Recovery

  34
• General Outound Proxy

  34
• Media Ports

  35
• Port Budgets

  35
• Media Relay

  35
• Controlling Routing

  35
• Multiple 2xx Handling

  36
• Challenging

  37
• Trusted Addresses

  37
• Maximum Packet Size

  37
• Silence Suppression

  38
• Connection Oriented Media

  38
• Removing Headers

  38
• Codec Control

  39
• Web Server Integration

  39
• CLIR Addresses

  39
• Timeout Settings

  40
• Register Timeouts

  40
• Call Timeouts

  41
• Security Settings

  42
• Outbound Proxy List

  44
• System Information

  45
• Server Log

  45
• Trace

  46
• Call History

  47
• Current Ports

  48
• Currently Handled UA

  49
• Memory Statistics

  49
• Web Server Integration

  51
• Interface to the Web Server

  52
• Authentication

  52
• Registration

  55
• Call Initiation

  56
• Call Termination

  58
• SNMP

  61
• Setup of the SBC

  61
• Setup of the Tools

  61
• Available OID

  62
• Checklist for Installation

  65
• Linux

  65
• Windows

  65