![background image](http://html.mh-extra.com/html/cisco/vgd-1t3/vgd-1t3_software-configuration-manual_65018006.webp)
Contents
vi
Cisco VGD 1T3 Voice Gateway Software Configuration Guide
T1 CAS Signaling
97
Configuring Dial Peers
98
Configurable Options
98
Dial-Peer Configuration Table
100
Configuring Echo Cancellation on the Voice Feature Card
101
Voice QoS Basics
102
Enabling QoS Features for VoIP
103
Congestion Management
103
Weighted Fair Queuing
103
Low-Latency Queuing
104
IP RTP Priority and Frame Relay IP RTP Priority
104
Resource Reservation
104
Call-Admission Control
105
Fragmentation and Interleaving
105
Traffic Shaping for Frame Relay
105
Other Bandwidth-Reduction Features
106
Voice Encoding
106
RTP Packet-Header Compression
107
Serialization Delay
107
Voice Activity Detection
107
Jitter Buffering
108
Additional Resources
108
Configuring the Cisco VGD 1T3 Voice Gateway as an H.323 or SIP Gateway
111
Configuring H.323 Gateways
111
Prerequisites for Configuring H.323 Gateways
111
How to Configure H.323 Gateways
112
Verifying the H.323 Voice Gateway Interface
114
Configuring SIP Gateways
114
Prerequisites for Basic SIP Configuration
114
Information About Basic SIP Configuration
114
Performing a Basic SIP Configuration
115
Configuration Examples for Basic SIP Configuration
115
Using Cisco Unified Communications Manager to Configure MGCP Gateway Support
117
Prerequisites for MGCP Gateway Support
117
Cisco IOS Voice Gateway
117
Cisco Unified Communications Manager
118
Restrictions for Configuring MGCP Gateway Support
118
Information About MGCP Gateway Support
118