Table of Contents
Linksys ATA Administration Guide
ii
Configuring NAT Mapping with STUN
40
Determining Whether the Router Uses Symmetric or Asymmetric NAT
41
Firewalls and SIP
42
Configuring SIP Timer Values
43
Chapter 4: Configuring Voice Services . . . . . . . . . . . . . . 44
Supported Codecs
44
Using a FAX Machine (SPA2102, SPA3102 or SPA8000)
45
Fax Troubleshooting
46
Managing Caller ID Service
47
Silence Suppression and Comfort Noise Generation
48
Configuring Dial Plans
49
About Dial Plans
49
Editing Dial Plans
55
Secure Call Implementation
57
Enabling Secure Calls
57
Secure Call Details
58
Using a Mini-Certificate
58
Generating a Mini Certificate
59
SIP Trunking and Hunt Groups on the SPA8000
61
About SIP Trunking
62
Setting the Trunk Group Call Capacity
64
Inbound Call Routing for a Trunk Group
64
Contact List for a Trunk Group
65
Outgoing Call Routing for a Trunk Group
66
Configuring a Trunk Group
67
Trunk Group Management
68
Setting the Hunt Policy
69
Additional Notes About Trunk Groups
69
Chapter 5: Configuring Music on Hold . . . . . . . . . . . . . . 70
Using the Internal Music Source for Music On Hold
70
Using the Internal Music Source
70
Changing the Music File for the Internal Music Source
71
Configuring a Streaming Audio Server
71
About the Streaming Audio Server
71
Configuring the Streaming Audio Server
72
Using the IVR with an SAS Line
73
Chapter 6: Configuring the PSTN (FXO) Gateway . . . . . . . . 74
Connecting to PSTN and VoIP Services
74
How VoIP-To-PSTN Calls Work
75
One-Stage Dialing
75
Two-Stage Dialing
76
How PSTN-To-VoIP Calls Work
77
Terminating Gateway Calls
77
VoIP Outbound Call Routing
78
Configuring VoIP Failover to PSTN
79
Sharing One VoIP Account Between the FXS and PSTN Lines
80
Other Options
81