Cisco Systems OL-20949-01 Mime Type and Other Http Headers, Content Expiration Header Setting

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Chapter 6 HTTP Requests and Header Settings

HTTP Header Settings

MIME Type and Other HTTP Headers

Although delivering pages with the proper MIME type and other formatting items is not difficult, it requires moderately in depth knowledge of your web server. The following code excerpt, written in JavaScript and used with Microsoft IIS and ASP, sets these values in a few lines:

<%@ Language=JavaScript %>

<%

Response.AddHeader( "Refresh",

"3; url=http://services.cisco.com/s/q.asp");

Response.ContentType = "text/xml";

//

//Additional page content here

%>

Usually, you can set the MIME type for pages in any web server by simply performing an association to the .xml file extension. Your web server documentation should explain how to accomplish this. This action allows you to serve static pages without the need for writing script.

If you want to deliver dynamic content by using the other supported HTTP headers, you will need to understand how to generate the HTTP headers by using the desired programming language and have common gateway interface (CGI) or script access on the target web server.

Audio Clips

You can serve audio clips to the phone from a web server by using the “audio/basic” MIME type setting. When this MIME type is used, the body of the response should contain raw audio data in the same format that is used for custom Cisco Unified IP Phone rings. Refer to the chapter on “Custom Phone Rings” in the Cisco Unified Communications Manager System Guide (also available in the online help).

Note The audio file should not be longer than five seconds.

Use the following ASP sample script to set the MIME type and to serve the file that is specified in the #include command:

<%@ Language=JavaScript%>

<%

Response.ContentType = "audio/basic";

%><!--#include file="filename.raw" --><% Response.End();%>

Using script to generate the MIME header when playing a sound provides an advantage because you may also include a refresh header to take the phone to a subsequent URL. Usually, you can set the MIME type for pages in any web server by simply performing an association to the .xml or .raw file extension. Your web server documentation should explain how to accomplish this. This action allows you to serve static pages without the need for writing script.

Content Expiration Header Setting

The expiration header can control which URLs are added to the phone URL history. This behavior differs slightly from traditional web browsers but is implemented to perform the same function. Disable the back button functionality to avoid calling a URL twice.

Cisco Unified IP Phone Services Application Development Notes

6-4

OL-20949-01

 

 

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Contents Americas Headquarters Text Part Number OL-20949-01Copyright 2004-2009 Cisco Systems, Inc. All rights reserved N T E N T S IiiDisplay Init Benefits Preface OverviewRevision History AudienceOrganization Chapter DescriptionViii Cisco Unified Communications Manager Administration Related DocumentationCisco Unified IP Phone 7900 Series Cisco Unified Communications Manager Business EditionCisco Product Security Overview Document ConventionsConvention Indication Page Xii Overview 1shows a sample text menuGraphic Menu on a Cisco Unified IP Phone Sample Page OL-20949-01 New and Changed Information New Information for Cisco Unified Communications ManagerOL-20949-01 CiscoIPPhone XML Objects Understanding Object Behavior1shows the supported XML objects for this release XML Object Definitions CiscoIPPhoneMenuCiscoIPPhoneText DefinitionCiscoIPPhoneInput Sample User Input DisplayCiscoIPPhoneDirectory InputFlag DescriptionCiscoIPPhoneImage Custom DirectoriesPacked Pixel Translation Example Resolution1 CiscoIPPhoneImageFileExample ModelMonochrome Cisco Unified IP Phone 7970G Image File DisplayCiscoIPPhoneGraphicMenu CiscoIPPhoneGraphicFileMenuCiscoIPPhoneIconMenu 5shows the display of the CiscoIPPhoneGraphicFileMenu6shows an IconMenu on a Cisco Unified IP Phone CiscoIPPhoneIconFileMenu CiscoIPPhoneStatusDynamic Sizing of the Application Status Window CiscoIPPhoneStatusPhone Models Area Width Area Height 7940G, 7960G 7962G, 7965G 7970G/7971G-GE, 7975G, IP CommunicatorPhone Models WxH No Timer WxH 7940G, 7960G CiscoIPPhoneStatusFileText Area Size 7962G, 7965GCiscoIPPhoneExecute Behavior DescriptionCiscoIPPhoneError Custom SoftkeysCiscoIPPhoneResponse XML Considerations SoftKeyItem NameDisplayed sofkey label/NameMandatory Escape Sequences XML EncodingCharacter Name Escape Sequence Application Event Handlers Supported UnsupportedAttributes Attribute Description Event Handler Schema Component APIs Application Management APIRTP Streaming API RTP Streaming Schema Interaction Rules with Legacy RTP URI StreamsXscomplexType Xsall Error Schema Errors and Responses ExamplesStart Media Stop MediaApplicable Condition Methods Http Result Code Type Data Internal URI Features Supported URIs by Phone Model7942G, 7962G 7906G 7945G, 7965G 7970G 6921 7905G 7911G 7921G 7940G 7971G-GE 6941Device Control URIs KeyURI Format KeyDirectories Phone Unsupported Models Description and AlternativesDisplay URIXML Displayable Object URIs SoftKeySelect Exit Update Submit Search Cancel Next Dial QueryStringParamInternal URI Features XML Displayable Object URIs Multimedia URIs RTP StreamingInteraction with Call Streaming RTPRx URI FormatsRTPTx Play VibrateInteraction with Incoming Calls Telephony URIs DialEditDial SendDigitsError and Response Condition Status DataApplication Management URIs InitNotify Called from SoftKey, with credentials, with data Application Called from SoftKey, no credentials, no dataAppactionpriorityidleTimerapplicationId Error and Response Http Requests and Header Settings Http Client Requests Http GETHttp Server Requests Http Post Http Header Settings See the Http Refresh Setting section on page 6-3sectionHttp Refresh Setting Refresh Display SampleContent Expiration Header Setting Mime Type and Other Http HeadersSet-Cookie Header Setting Http Encoding Header Setting Accept-LanguageIdentifying the Capabilities of IP Phone Clients CiscoIPPhoneModelNameCiscoIPPhoneDisplay Accept Header CiscoIPPhoneSDKVersionAccessing IP Phone Information Html URL XML URLOL-20949-01 Troubleshooting Cisco Unified IP Phone Service Applications Troubleshooting TipsXML Parsing Errors Error Messages Cisco IP Phone Services Software Development Kit SDK SDK ComponentsOL-20949-01 Sample Services Requirements \CiscoIpServices\ToolsOL-20949-01 IP Phone Service Administration Subscription Accessing Phone Service AdministrationAdding a Phone Service Field DescriptionDefining IP Phone Service Parameters Field Description Service Parameter InformationUser Service Subscription DeviceListX Report 10-1Benefits RestrictionsIntegration Considerations and Interoperability Performance and ScalabilityRelated Features and Technologies SecuritySupported Platforms PrerequisitesTroubleshooting DeviceListX Reports Error CodesField Name Description 10-4Determining Problems With the Interface Procedure10-5 10-6 CiscoIPPhone XML Object Quick Reference Object DefinitionAppendix a CiscoIPPhone XML Object Quick Reference IndexA unique index from 0 to 9/Index OL-20949-01 Cisco Unified IP Phone Services XML Schema File Updated XML Parser and Schema EnforcementCiscoIPPhone.xsd Xsdelement name=Name minOccurs=0 xsdsimpleType Xsdrestriction XsdsimpleType XsdsimpleType xsdrestriction base=xsdstring XsdcomplexType name=CiscoIPPhoneSoftKeyType xsdsequence Xsdelement name=Title minOccurs=0 xsdsimpleType Xsdrestriction XsdsimpleType Xsdattribute XsdcomplexType Xsdelement name=CiscoIPPhoneDirectory xsdcomplexType Xsdelement name=CiscoIPPhoneImageFile xsdcomplexType Xsdelement name=CiscoIPPhoneIconMenu xsdcomplexType Xsdelement name=CiscoIPPhoneGraphicFileMenu xsdcomplexType Xsdsequence Xsdelement name=Text minOccurs=0 xsdsimpleType Xsdsequence XsdcomplexType Xsdelement Numerics IN-1Html URL IN-2IN-3 XML URL IN-4
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