Extension of ITU-T standard H.320 that enables videoconferencing over LANs and other packet-switched networks, as well as video over the Internet.
Technology Information
Design
Design Guides
(All Gateway Protocols Design Guides)
Design TechNotes
(All Gateway Protocols Design TechNotes)
(All Gateway Protocols Design Guides)
Design TechNotes
(All Gateway Protocols Design TechNotes)
Analog E&M Voice Signaling Overview
CDR Logging Configuration with Syslog Servers and Cisco IOS Gateways
Cisco Digital 1-port and 2-port T1 Multi-Flex Voice WICs
Defining Analog Voice
Designing and Deploying VoIP over ISDN
E&M Cable Pinouts Connecting Cisco 1750/2600/3600 E&M VIC to Lucent PBX G3R E&M Trunk
E&M Cable Pinouts to Connect Cisco 1750/2600/3600 E&M VIC to Nortel PBX Option 11 E&M Trunk
MGCP and H.323 Voice Gateway Protocol Comparison
Third Party H323 Calls Fail with Cisco IOS Later than 12.2(8)T
Troubleshooting No Dial Tone Issues
Understanding and Troubleshooting Gatekeeper TTL and Aging out Process
Understanding Cisco IOS Gatekeeper Call Routing
Understanding Codecs: Complexity, Hardware Support, MOS, and Negotiation
Understanding Direct-Inward-Dial (DID) on IOS Voice Digital (T1/E1) Interfaces
Understanding H.323 Gatekeepers
Understanding Inbound and Outbound Dial Peers on Cisco IOS Platforms
Voice Design and Implementation Guide
VoIP over PPP Links with Quality of Service (LLQ / IP RTP Priority, LFI, cRTP)
Waveform Coding Techniques
Zone Prefix Processing with Dots Versus Asterisks
CDR Logging Configuration with Syslog Servers and Cisco IOS Gateways
Cisco Digital 1-port and 2-port T1 Multi-Flex Voice WICs
Defining Analog Voice
Designing and Deploying VoIP over ISDN
E&M Cable Pinouts Connecting Cisco 1750/2600/3600 E&M VIC to Lucent PBX G3R E&M Trunk
E&M Cable Pinouts to Connect Cisco 1750/2600/3600 E&M VIC to Nortel PBX Option 11 E&M Trunk
MGCP and H.323 Voice Gateway Protocol Comparison
Third Party H323 Calls Fail with Cisco IOS Later than 12.2(8)T
Troubleshooting No Dial Tone Issues
Understanding and Troubleshooting Gatekeeper TTL and Aging out Process
Understanding Cisco IOS Gatekeeper Call Routing
Understanding Codecs: Complexity, Hardware Support, MOS, and Negotiation
Understanding Direct-Inward-Dial (DID) on IOS Voice Digital (T1/E1) Interfaces
Understanding H.323 Gatekeepers
Understanding Inbound and Outbound Dial Peers on Cisco IOS Platforms
Voice Design and Implementation Guide
VoIP over PPP Links with Quality of Service (LLQ / IP RTP Priority, LFI, cRTP)
Waveform Coding Techniques
Zone Prefix Processing with Dots Versus Asterisks
Configure
Configuration Examples and TechNotes
(All Gateway Protocols Configuration Examples and TechNotes)
(All Gateway Protocols Configuration Guides)
(All Gateway Protocols Configuration Examples and TechNotes)
Audio Codec Configuration on H.323 Signaling Interface (HSI)
Basic Two Zone Cisco Gateway-to-Gatekeeper Configuration
CDR Logging Configuration with Syslog Servers and Cisco IOS Gateways
Cisco CallManager 3.3 Gatekeeper Configuration
Cisco CallManager and H.323 Gateway Interaction Issues
Cisco IOS Gatekeepers in Intrazone H.323 Networks Configuration Example
Cisco IOS H.323 Gateway Configuration for Use with Cisco CallManager
Cisco IOS Telephony Service (ITS) Configuration and Troubleshooting
Configuring an Anonymous Device Gatekeeper with Cisco CallManager Versions 3.3 and 4.1
Configuring and Troubleshooting an ATA 186 with a Cisco IOS Gateway
Configuring Basic Gatekeeper Call Admission Control
Configuring Connection PLAR for VoIP Gateways
Configuring Connection Trunk for VoIP Gateways
Configuring Hookflash Relay on FXS/FXO Voice Ports
Designing and Deploying VoIP over ISDN
Enhanced Transcoding and Conferencing for IOS Voice Gateways in a CallMananger Network using DSP Resources Configuration Example
Frame Relay Traffic Shaping for VoIP and VoFR
H.320 Gateway to H.323 Gatekeeper Video Call Flow
H.323 Gateway Dial-Peer Configuration for Cisco CallManager Server Redundancy
H.323 Video Call Flow Across CUBE and Cisco Gatekeeper
Hookflash Transfer in MGCP
How to Configure Video over IP for Polycom Video Units
How-to Configure Microsoft NetMeeting with Cisco IOS Gateways
Implementing QoS Solutions for H.323 Video Conferencing over IP
Local to Remote Network Using the Cisco Multiservice IP-to-IP Gateway Feature
MGCP Gateway Fallback Transition to Default H.323 Session Application
Nortel PBX Option 11 E&M Trunk Card Configuration Example
PIX/ASA 7.x: Enable VoIP (SIP, MGCP, H323, SCCP) Services Configuration Example
Remote to Local Network with the Cisco Multiservice IP-to-IP Gateway Feature
Troubleshooting No Dial Tone Issues
Understanding Cisco IOS Gatekeeper Call Routing
Understanding Codecs: Complexity, Hardware Support, MOS, and Negotiation
Understanding Direct-Inward-Dial (DID) on IOS Voice Digital (T1/E1) Interfaces
Understanding, Configuring and Troubleshooting Resource Allocation Indication
VoIP over Frame Relay with Multipoint PVCs and Prioritization
VoIP over Frame Relay with Quality of Service (Fragmentation, Traffic Shaping, LLQ / IP RTP Priority)
VoIP over PPP Links with Quality of Service (LLQ / IP RTP Priority, LFI, cRTP)
VoIP QoS for Frame Relay to ATM Interworking with LLQ, PPP LFI and cRTP
VoIP with Channel Associated Signaling (CAS)
VoIP with Common Channel Signaling (CCS)
VoIP with Gatekeeper
VoIP with IVR
VoIP with PPP over High Bandwidth Leased Line and LLQ
Zone Prefix Processing with Dots Versus Asterisks
Configuration GuidesBasic Two Zone Cisco Gateway-to-Gatekeeper Configuration
CDR Logging Configuration with Syslog Servers and Cisco IOS Gateways
Cisco CallManager 3.3 Gatekeeper Configuration
Cisco CallManager and H.323 Gateway Interaction Issues
Cisco IOS Gatekeepers in Intrazone H.323 Networks Configuration Example
Cisco IOS H.323 Gateway Configuration for Use with Cisco CallManager
Cisco IOS Telephony Service (ITS) Configuration and Troubleshooting
Configuring an Anonymous Device Gatekeeper with Cisco CallManager Versions 3.3 and 4.1
Configuring and Troubleshooting an ATA 186 with a Cisco IOS Gateway
Configuring Basic Gatekeeper Call Admission Control
Configuring Connection PLAR for VoIP Gateways
Configuring Connection Trunk for VoIP Gateways
Configuring Hookflash Relay on FXS/FXO Voice Ports
Designing and Deploying VoIP over ISDN
Enhanced Transcoding and Conferencing for IOS Voice Gateways in a CallMananger Network using DSP Resources Configuration Example
Frame Relay Traffic Shaping for VoIP and VoFR
H.320 Gateway to H.323 Gatekeeper Video Call Flow
H.323 Gateway Dial-Peer Configuration for Cisco CallManager Server Redundancy
H.323 Video Call Flow Across CUBE and Cisco Gatekeeper
Hookflash Transfer in MGCP
How to Configure Video over IP for Polycom Video Units
How-to Configure Microsoft NetMeeting with Cisco IOS Gateways
Implementing QoS Solutions for H.323 Video Conferencing over IP
Local to Remote Network Using the Cisco Multiservice IP-to-IP Gateway Feature
MGCP Gateway Fallback Transition to Default H.323 Session Application
Nortel PBX Option 11 E&M Trunk Card Configuration Example
PIX/ASA 7.x: Enable VoIP (SIP, MGCP, H323, SCCP) Services Configuration Example
Remote to Local Network with the Cisco Multiservice IP-to-IP Gateway Feature
Troubleshooting No Dial Tone Issues
Understanding Cisco IOS Gatekeeper Call Routing
Understanding Codecs: Complexity, Hardware Support, MOS, and Negotiation
Understanding Direct-Inward-Dial (DID) on IOS Voice Digital (T1/E1) Interfaces
Understanding, Configuring and Troubleshooting Resource Allocation Indication
VoIP over Frame Relay with Multipoint PVCs and Prioritization
VoIP over Frame Relay with Quality of Service (Fragmentation, Traffic Shaping, LLQ / IP RTP Priority)
VoIP over PPP Links with Quality of Service (LLQ / IP RTP Priority, LFI, cRTP)
VoIP QoS for Frame Relay to ATM Interworking with LLQ, PPP LFI and cRTP
VoIP with Channel Associated Signaling (CAS)
VoIP with Common Channel Signaling (CCS)
VoIP with Gatekeeper
VoIP with IVR
VoIP with PPP over High Bandwidth Leased Line and LLQ
Zone Prefix Processing with Dots Versus Asterisks
(All Gateway Protocols Configuration Guides)
Maintain and Operate
Troubleshoot and Alerts
Troubleshooting TechNotes
(All Gateway Protocols Troubleshooting TechNotes)
(All Gateway Protocols Troubleshooting TechNotes)
Analog E&M Troubleshooting Guidelines (Cisco IOS Platforms)
Analog E&M Voice Signaling Overview
Audio Codec Configuration on H.323 Signaling Interface (HSI)
Call Failure to Long Distance/Mobile Destination
CDR Logging Configuration with Syslog Servers and Cisco IOS Gateways
Cisco CallManager and H.323 Gateway Interaction Issues
Cisco Digital 1-port and 2-port T1 Multi-Flex Voice WICs
Cisco IOS H.323 Gateway Configuration for Use with Cisco CallManager
Defining Analog Voice
Designing and Deploying VoIP over ISDN
E&M Cable Pinouts Connecting Cisco 1750/2600/3600 E&M VIC to Lucent PBX G3R E&M Trunk
E&M Cable Pinouts to Connect Cisco 1750/2600/3600 E&M VIC to Nortel PBX Option 11 E&M Trunk
Frame Relay Traffic Shaping for VoIP and VoFR
H.323 T.38 Fax Relay Issues
Identify, Supersede, and Maintain Compatible DSP Firmware Version Levels on C5510 DSPs
Implementing QoS Solutions for H.323 Video Conferencing over IP
MGCP and H.323 Voice Gateway Protocol Comparison
Multiservice Voice Debug Lookup
PSTN Callers not Hearing any Ring Back When they Call IP Phones
Third Party H323 Calls Fail with Cisco IOS Later than 12.2(8)T
Toll-Fraud Prevention Feature in IOS Release 15.1(2)T
Troubleshooting and Debugging VoIP Call Basics
Troubleshooting DSPs on the PA-VXA/PA-VXB/PA-VXC T1/E1 Voice Port Adaptors and the PA-MCX MIX-Enabled Multichannel T1/E1 Port Adaptors for Cisco 7200/7400/7500 Series Routers
Troubleshooting Gatekeeper Endpoint Call Admission Issues
Troubleshooting Gatekeeper Registration Issues
Troubleshooting GUP, Alternate Endpoint and Load Balancing
Troubleshooting ISDN Call Failures Originated from NetMeeting or Similar 3rd Party H.323 Devices
Troubleshooting No Busy Tone and No Announcement Messages on ISDN-VoIP (H.323) Calls
Troubleshooting No Dial Tone Issues
Troubleshooting No Ringback Tone on ISDN-VoIP (H.323) Calls
Troubleshooting One Way Voice Issues
Troubleshooting Unrecognized Voice Interface Cards on Cisco 1750, 1751, and 1760 Routers
Troubleshooting Voice Connection Trunks
Understanding and Troubleshooting Gatekeeper TTL and Aging out Process
Understanding Cisco IOS Gatekeeper Call Routing
Understanding Codecs: Complexity, Hardware Support, MOS, and Negotiation
Understanding Direct-Inward-Dial (DID) on IOS Voice Digital (T1/E1) Interfaces
Understanding H.323 Gatekeepers
Understanding Inbound and Outbound Dial Peers on Cisco IOS Platforms
Understanding, Configuring and Troubleshooting Resource Allocation Indication
Voice Design and Implementation Guide
VoIP over PPP Links with Quality of Service (LLQ / IP RTP Priority, LFI, cRTP)
Waveform Coding Techniques
Zone Prefix Processing with Dots Versus Asterisks
Analog E&M Voice Signaling Overview
Audio Codec Configuration on H.323 Signaling Interface (HSI)
Call Failure to Long Distance/Mobile Destination
CDR Logging Configuration with Syslog Servers and Cisco IOS Gateways
Cisco CallManager and H.323 Gateway Interaction Issues
Cisco Digital 1-port and 2-port T1 Multi-Flex Voice WICs
Cisco IOS H.323 Gateway Configuration for Use with Cisco CallManager
Defining Analog Voice
Designing and Deploying VoIP over ISDN
E&M Cable Pinouts Connecting Cisco 1750/2600/3600 E&M VIC to Lucent PBX G3R E&M Trunk
E&M Cable Pinouts to Connect Cisco 1750/2600/3600 E&M VIC to Nortel PBX Option 11 E&M Trunk
Frame Relay Traffic Shaping for VoIP and VoFR
H.323 T.38 Fax Relay Issues
Identify, Supersede, and Maintain Compatible DSP Firmware Version Levels on C5510 DSPs
Implementing QoS Solutions for H.323 Video Conferencing over IP
MGCP and H.323 Voice Gateway Protocol Comparison
Multiservice Voice Debug Lookup
PSTN Callers not Hearing any Ring Back When they Call IP Phones
Third Party H323 Calls Fail with Cisco IOS Later than 12.2(8)T
Toll-Fraud Prevention Feature in IOS Release 15.1(2)T
Troubleshooting and Debugging VoIP Call Basics
Troubleshooting DSPs on the PA-VXA/PA-VXB/PA-VXC T1/E1 Voice Port Adaptors and the PA-MCX MIX-Enabled Multichannel T1/E1 Port Adaptors for Cisco 7200/7400/7500 Series Routers
Troubleshooting Gatekeeper Endpoint Call Admission Issues
Troubleshooting Gatekeeper Registration Issues
Troubleshooting GUP, Alternate Endpoint and Load Balancing
Troubleshooting ISDN Call Failures Originated from NetMeeting or Similar 3rd Party H.323 Devices
Troubleshooting No Busy Tone and No Announcement Messages on ISDN-VoIP (H.323) Calls
Troubleshooting No Dial Tone Issues
Troubleshooting No Ringback Tone on ISDN-VoIP (H.323) Calls
Troubleshooting One Way Voice Issues
Troubleshooting Unrecognized Voice Interface Cards on Cisco 1750, 1751, and 1760 Routers
Troubleshooting Voice Connection Trunks
Understanding and Troubleshooting Gatekeeper TTL and Aging out Process
Understanding Cisco IOS Gatekeeper Call Routing
Understanding Codecs: Complexity, Hardware Support, MOS, and Negotiation
Understanding Direct-Inward-Dial (DID) on IOS Voice Digital (T1/E1) Interfaces
Understanding H.323 Gatekeepers
Understanding Inbound and Outbound Dial Peers on Cisco IOS Platforms
Understanding, Configuring and Troubleshooting Resource Allocation Indication
Voice Design and Implementation Guide
VoIP over PPP Links with Quality of Service (LLQ / IP RTP Priority, LFI, cRTP)
Waveform Coding Techniques
Zone Prefix Processing with Dots Versus Asterisks