Installation and Troubleshooting Guide for Cisco Unified Video Advantage Release 2.0
Preparing Your Network for Cisco Unified Video Advantage
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Preparing Your Network for Cisco Unified Video Advantage

Table Of Contents

Preparing Your Network for Cisco Unified Video Advantage

Cisco Unified Video Advantage Network Requirements

Supported Protocols on Cisco Unified Video Advantage

Supported Video Codecs on Cisco Unified Video Advantage

Configuring Cisco Unified CallManager for Cisco Unified Video Advantage

Configuring Cisco Unified IP Phones for Cisco Unified Video Advantage

Using the Bulk Administration Tool (BAT) to Update Cisco IP Phones for Video Support


Preparing Your Network for Cisco Unified Video Advantage


This section provides information about preparing your network and configuring Cisco Unified CallManager and Cisco IP Phones for Cisco Unified Video Advantage. It includes the following topics:

Cisco Unified Video Advantage Network Requirements

Supported Protocols on Cisco Unified Video Advantage

Supported Video Codecs on Cisco Unified Video Advantage

Configuring Cisco Unified CallManager for Cisco Unified Video Advantage

Configuring Cisco Unified IP Phones for Cisco Unified Video Advantage

Cisco Unified Video Advantage Network Requirements

For Cisco Unified Video Advantage to successfully operate as a video endpoint in your network, your network must meet the following requirements:

Working VoIP Network

Voice over IP (VoIP) configured on your Cisco routers and gateways

For Cisco Unified Unified IP Phones, Cisco Unified CallManager Version 4.0(1), Service Release 2 or higher (minimum requirement; see the "Software Requirements" section on page 1-7 for compatibility information.)

For Cisco IP Communicator version 2.0 and Cisco Unified CallManager Version 4.1(3) Service Release 1 or higher


Caution Cisco Unified Video Advantage is not supported on CiscoUnified IP Phones running on the SIP protocol. They are only supported on Cisco Unified IP Phones running on the SCCP protocol.

IP network that supports DHCP or manual assignment of IP address, gateway, and subnet mask in Cisco Unified CallManager.

IP telephony networks with access control lists and/or firewalls between voice VLANs and data VLANs must be configured so that the access control lists and/or firewalls allow the Cisco Audio Session Tunnel (CAST) protocol to communicate with the Cisco IP Phone and the PC (Cisco Unified Video Advantage) over TCP/IP using TCP port 4224. Bi-directional communication on TCP port 4224 is required.

For more information, refer to the Cisco IP Video Telephony Solution Reference Network Design (SRND) for Cisco Unified CallManager at this URL: http://www.cisco.com/warp/public/779/largeent/it/ese/srnd.html

Cisco IP Communicator (Release 2.0 or later) or video-enabled Cisco Unified IP Phone installed and configured on your IP network with phone loads that support video.

Quality of Service is properly configured on your network to provide prioritized treatment of the audio and video streams.

For more information about quality of service, refer to the Quality of Service Design Guide, which is available at this URL: http://www.cisco.com/warp/public/779/largeent/it/ese/srnd.html

If multi-party video conferences are desired, a Cisco Unified Videoconferencing 3511 or Cisco Unified Videoconferencing 3540 MCU (with Cisco IP/VC Version 3.2 Plus software) is required.

For more information about setting up Cisco Unified CallManager and a Cisco Unified Videoconferencing MCU 3511 or 3540 to provide video conferences, refer to the Cisco IP/VC 3511 MCU and Cisco IP/VC 3540 MCU Module Administrator Guide (Version 3.2), which is available at this URL: http://www.cisco.com/en/US/products/hw/video/ps1870/prod_maintenance_guides_list.html

If Public Switched Telephone Network (PSTN) connectivity for video calls is required, a Cisco Unified Videoconferencing 3521 BRI, Cisco Unified Videoconferencing 3526, or Cisco Unified Videoconferencing 3540 PRI Gateway is required.

For more information about setting up Cisco Unified CallManager to use a Cisco Unified Videoconferencing 3526 or 3540 PRI Gateway, refer to the Cisco IP/VC 3526 PRI Gateway and Cisco IP/VC 3540 PRI Gateway Module Administrator Guide, 2.0, which is available at this URL: http://www.cisco.com/univercd/cc/td/doc/product/ipvc/ipvc3540/gateway/index.htm

Supported Protocols on Cisco Unified Video Advantage

Cisco Unified Video Advantage supports several industry-standard and Cisco networking protocols required for video communication. See the following table for an overview of the supported networking protocols.

Networking Protocol
Purpose
Usage Notes

Cisco Audio Session Tunnel (CAST)

The CAST protocol allows Cisco IP Phones and associated applications behind the phone to discover and communicate with the remote endpoints without requiring changes to the traditional signaling components like Cisco Unified CallManager and gateways.

CAST works:

Between Cisco Unified Video Advantage and the Cisco Unified IP Phone to exchange capabilities

Between Cisco Unified Video Advantage and Cisco Unified CallManager, with the Cisco IP Phone as an SCCP proxy.

CAST triggers Cisco Unified Video Advantage call events such as: call video stream start and stop; speaker on/speaker off; audio mute on/audio mute off; call hold/call resume.

CAST allows Cisco Unified Video Advantage to discover remote Cisco Unified Video Advantage-capable endpoints.

Cisco Discovery Protocol (CDP)

CDP is a device-discovery protocol that runs on all Cisco-manufactured equipment.

Using CDP, a device can advertise its existence to other devices and receive information about other devices in the network.

Cisco Unified Video Advantage uses the CDP protocol to communicate configuration information to the Cisco IP Phone, and the Cisco IP Phone uses CDP to communicate to Cisco Unified Video Advantage. With CDP, each device sends periodic messages to a multicast address and in turn listens to the periodic messages sent by other devices. This allows devices on the network to discover one another and learn information such as protocols used, protocol addresses, and so on.

Internet Protocol (IP)

IP is a networking protocol that addresses and sends packets across the network.

To communicate using IP, network devices must have an assigned IP address, subnet, and gateway.

Real-Time Transport Protocol (RTP)

RTP is a standard for using UDP to transport real-time data, such as interactive voice and video, over data networks.

The RTP protocol is used to encapsulate and stream the audio and video between endpoints and Cisco Unified Video Advantage.

Skinny Client Control Protocol (SCCP)

A Cisco protocol using low- bandwidth messages that allows communication between IP devices and the Cisco Unified CallManager.

If a Skinny Client Control Protocol Cisco IP Phone reports video capabilities, Cisco Unified CallManager automatically opens a video channel if the other end supports video.

For Skinny Client Control Protocol video calls, the system determines video call bandwidth by using regions.

Transmission Control Protocol (TCP)

TCP is a connection-oriented transport protocol in the IP family.

Cisco Unified Video Advantage uses TCP to connect to Cisco Unified CallManager and to communicate to a Cisco Unified IP Phone.


Supported Video Codecs on Cisco Unified Video Advantage

These video codecs are supported in Cisco Unified Video Advantage.

H.263

H.264

By default, Cisco Unified Video Advantage is configured to support both H.263 and H.264 video codecs. If both codecs are available, the application will give priority to H.264. See the"Customizing Deployment with Command Line Options" section on page 3-4 for more information about customizing video codecs.

Configuring Cisco Unified CallManager for Cisco Unified Video Advantage

Cisco Unified Video Advantage requires Cisco Unified CallManager to handle video call processing on the Cisco Unified IP Phones. The Cisco Unified CallManager documentation provides detailed information about video call processing. Specifically, the following reference guides provide more details:

Cisco Unified CallManager System Guide, section "Understanding Video Telephony"

Cisco Unified CallManager Administration Guides.

These guides are available at this URL: http://www.cisco.com/en/US/products/sw/voicesw/ps556/prod_maintenance_guides_list.html

The following table provides information about particular feature settings that need to be properly configured on Cisco Unified CallManager to support Cisco Unified Video Advantage.

CCM Feature
Description
Configuration Reference

Alternate routing

You can use route/hunt lists or Automated Alternate Routing (AAR) groups to try different paths for video calls if you do not want the default behavior specified by the Retry Video Call as Audio setting (see below in this table).

Cisco Unified CallManager Administration Guide, Route/Hunt List Configuration and Automated Alternate Routing Group Configuration sections

Differentiated Service Code Point (DSCP)

DSCP packet marking can be changed using these QOS service parameters:

DSCPForAudioCalls

DSCPForVideoCalls

Cisco Unified CallManager System Guide, Bandwidth Managment section

Locations

Locations in Cisco Unified CallManager Administration specify how much audio and video bandwidth is allowed for all calls in a specific location.

Parameters include:

Location audio bandwidth

Location video bandwidth

Cisco Unified CallManager Administration Guide, Location Configuration section

Media Resource Group List (MRGL)

A Media Resource Group List in Cisco Unified CallManager specifies a prioritized list of Media Resource Groups (MRG).

For video conference calls, make sure that a video conference bridge is configured in a Media Resource Group as the first conference bridge resource, and that this MRG is the first entry in the MRGL assigned to a video endpoint.

Cisco Unified CallManager Administration Guide, Media Resource Group List Configuration section

Cisco Unified CallManager System Guide, Media Resource Management section

Regions

Regions in Cisco Unified CallManager Administation specify the maximum audio codec and video call bandwidth that are used within and between regions for each video call.

Parameters include:

Region audio codec

Region video call bandwidth

Cisco Unified CallManager Administration Guide, Region Configuration section

Retry Video Call as Audio

When an endpoint (phone, gateway, trunk) cannot obtain the bandwidth that it needs for a video call, call control retries the call as an audio call.

Cisco Unified CallManager Administration Guide, Phone Configuration Settings section


Configuring Cisco Unified IP Phones for Cisco Unified Video Advantage

Cisco Unified Video Advantage is supported on all video-enabled Cisco Unified IP Phones including Cisco IP Communicator.

The PC on which Cisco Unified Video Advantage is installed must be directly connected to a Cisco Unified IP Phone, either to Cisco IP Communicator or directly connected to the Access port labelled "10/100 PC" on the back of the Cisco Unified IP Phone. The Cisco Unified IP Phone requires Cisco Unified CallManager to handle call processing and the appropriate phone load that enables video on the phone. (A phone enabled for video will display a video icon in the lower righthand corner of the LCD screen.)

Refer to the appropriate Cisco Unified IP Phone administration guides for Cisco Unified CallManager to ensure that the Cisco Unified IP Phones are properly set up and configured. These guides are available at this URL: http://www.cisco.com/en/US/products/hw/phones/ps379/tsd_products_support_series_home.html

The following table provides information about particular feature settings that need to be properly configured on Cisco Unified CallManager to support Cisco Unified Video Advantage on Cisco IP Phones.


Note In this document, references to Cisco Unified IP Phones include all video-enabled Cisco Unified IP Phones as well as Cisco IP Communicator. See the Cisco Unified IP Phone documentation for the latest information about which phone models support video. The Cisco Unified IP Phone documentation is available at the following URL: http://www.cisco.com/en/US/products/hw/phones/ps379/tsd_products_support_series_home.html


CCM Feature
Description
Configuration Reference

PC Port

Indicates whether the PC port on the Cisco IP Phone is enabled or disabled. The port labelled "10/100 PC" on the back of the phone connects a PC or workstation to the phone so they can share a single network connection.

Make sure this feature is enabled on Cisco IP Phones that operate with Cisco Unified Video Advantage.

Cisco Unified CallManager Administration Online Help > Device > Phone > Phone Configuration

Phone load

Indicates the phone load that supports video.

Make sure that the phone load that supports video is loaded on each Cisco IP Phone.

Cisco Unified CallManager Administration Online Help > Device > Phone > Phone Configuration

Video Capabilities

Indicates that the phone will participate in video calls when connected to an appropriately equipped PC.

Make sure this feature is enabled on Cisco IP Phones that operate with Cisco Unified Video Advantage.

Cisco Unified CallManager Administration Online Help > Device > Phone > Phone Configuration


Using the Bulk Administration Tool (BAT) to Update Cisco IP Phones for Video Support

You can use the Cisco Unified CallManager Bulk Administration Tool (BAT) to update a large number of phones on your network for video support. You can use BAT to set these video settings on the phones: PC Port and Video Capabilities. For more information about this tool, refer to the Bulk Administration Tool (BAT) User Guide, which is available at this URL: http://www.cisco.com/en/US/products/sw/voicesw/ps556/prod_maintenance_guides_list.html