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<concept xml:lang="en" id="GUID-243CF1A9-F3CF-5562-8746-1CB392CDB73A"><title>List of Classes</title><prolog><metadata><keywords/></metadata></prolog><conbody><p>The following classes are available as a part of the SIP Codec API: </p> <p> <xref href="GUID-5AE56A31-A7E4-34D1-8F7B-0C5D443E7923.dita"><apiname>CSIPAcceptContactHeader</apiname></xref>, <xref href="GUID-F53FC9DB-9804-367F-B1BE-593B200AF9AC.dita"><apiname>CSIPAcceptEncodingHeader</apiname></xref>, <xref href="GUID-0DD72283-51C7-3105-A9FD-B91E0676FE22.dita"><apiname>CSIPAcceptHeader</apiname></xref>, <xref href="GUID-EDFA0F84-03E3-3E47-BE52-C28F4BB168D7.dita"><apiname>CSIPAcceptLanguageHeader</apiname></xref>, <xref href="GUID-F8BF1190-F5D4-31EF-B060-A1430AA07DAC.dita"><apiname>CSIPAddress</apiname></xref>, <xref href="GUID-10E79E17-0867-3F61-B953-3248C48411B0.dita"><apiname>CSIPAddressHeaderBase</apiname></xref>, <xref href="GUID-DA6DFEA8-F880-3636-8CFF-064323915B88.dita"><apiname>CSIPAllowEventsHeader</apiname></xref>, <xref href="GUID-77CD31ED-14E4-32A9-A9E0-C9E07490950D.dita"><apiname>CSIPAllowHeader</apiname></xref>, <xref href="GUID-D3DD76B0-1B51-3B7F-9DCB-AB67AABEDE16.dita"><apiname>CSIPCallIDHeader</apiname></xref>, <xref href="GUID-80650638-B1B6-3AE5-A914-04ABE64BBD6E.dita"><apiname>CSIPContactHeader</apiname></xref>, <xref href="GUID-EB7F958F-83FC-3BA4-8BB3-8B9FEF4F6556.dita"><apiname>CSIPContentDispositionHeader</apiname></xref>, <xref href="GUID-AA2D2C15-9860-369B-A482-9AFA2459DEAC.dita"><apiname>CSIPContentEncodingHeader</apiname></xref>, <xref href="GUID-F9F9E15E-3E4F-3FBB-865D-FBBF3017C862.dita"><apiname>CSIPContentTypeHeader</apiname></xref>, <xref href="GUID-F1D275B7-98B9-3268-B9AF-242BCB411F6A.dita"><apiname>CSIPCSeqHeader</apiname></xref>, <xref href="GUID-0496BF94-7EE7-3663-A2CF-231D6A722E19.dita"><apiname>CSIPEventHeader</apiname></xref>, <xref href="GUID-411698F5-9555-3552-BADE-8CF9FEF023F1.dita"><apiname>CSIPExpiresHeader</apiname></xref>, <xref href="GUID-5E7AA28B-3A8E-3387-91CB-89B5CA7F6E8B.dita"><apiname>CSIPExtensionHeader</apiname></xref>, <xref href="GUID-AFEC85BE-5971-3043-B9A9-24048346AADE.dita"><apiname>CSIPFromHeader</apiname></xref>, <xref href="GUID-795156A2-522C-3DF1-A50B-8A0B58B01364.dita"><apiname>CSIPFromToHeaderBase</apiname></xref>, <xref href="GUID-024E2C1F-8B6F-316E-BAD5-8B27D81DE859.dita"><apiname>CSIPHeaderBase</apiname></xref>, <xref href="GUID-6B5E267F-467D-3B0C-B10E-6CBEA01D0D02.dita"><apiname>CSIPParameterHeaderBase</apiname></xref>, <xref href="GUID-DAC484F1-37E9-32A8-8FBC-F36725E3908A.dita"><apiname>CSIPPAssociatedURIHeader</apiname></xref>, <xref href="GUID-4AC13A81-4AC8-36BB-80E1-86196937C71C.dita"><apiname>CSIPProxyRequireHeader</apiname></xref>, <xref href="GUID-F82F371F-DEF8-3DBC-B894-1E735CCCD8E8.dita"><apiname>CSIPRAckHeader</apiname></xref>, <xref href="GUID-E9D03606-61ED-3B16-BCE5-E24D3236053D.dita"><apiname>CSIPReferToHeader</apiname></xref>, <xref href="GUID-20494491-FB9B-3B46-83A8-783E01DD884A.dita"><apiname>CSIPReplyToHeader</apiname></xref>, <xref href="GUID-7F975FCE-0FB8-35DE-8FB2-1B4ADD90FD0E.dita"><apiname>CSIPRequireHeader</apiname></xref>, <xref href="GUID-4C26E7CA-B3EB-3227-93A1-DFD874D05EAA.dita"><apiname>CSIPRetryAfterHeader</apiname></xref>, <xref href="GUID-6717F60D-0D2A-380B-98CF-8AF853524688.dita"><apiname>CSIPRouteHeader</apiname></xref>, <xref href="GUID-06B9A8BC-7E81-3E61-B1F1-F536582A8CA6.dita"><apiname>CSIPRouteHeaderBase</apiname></xref>, <xref href="GUID-26FF2689-DE0E-3D89-9194-8173CF962D78.dita"><apiname>CSIPRSeqHeader</apiname></xref>, <xref href="GUID-2D5DB79B-6635-347B-9C5A-77F7D9DA0580.dita"><apiname>CSIPSecurityClientHeader</apiname></xref>, <xref href="GUID-D9A7398F-B004-3DDC-B6E7-56F1AB240331.dita"><apiname>CSIPSecurityHeaderBase</apiname></xref>, <xref href="GUID-55CC6468-1D08-3EFD-872F-E1303830C49C.dita"><apiname>SIPStrings</apiname></xref>, <xref href="GUID-65943653-C8AF-3AF4-91B6-F48F55854B2F.dita"><apiname>CSIPSubscriptionStateHeader</apiname></xref>, <xref href="GUID-4C379AE6-F596-3962-8AE1-D4B468BA4ADD.dita"><apiname>CSIPSupportedHeader</apiname></xref>, <xref href="GUID-3EF19668-E30B-3099-9890-F9E2984BFF1D.dita"><apiname>CSIPTimestampHeader</apiname></xref>, <xref href="GUID-7B5D0432-5C2C-3EFB-B9FA-8B4A0AA68FC0.dita"><apiname>CSIPToHeader</apiname></xref>, <xref href="GUID-373630F1-B111-36EC-A5C5-5504B93A6F2D.dita"><apiname>CSIPTokenHeaderBase</apiname></xref>, <xref href="GUID-0001C4C9-1AFC-36F6-8272-8D8EF2857365.dita"><apiname>CSIPUnsupportedHeader</apiname></xref>, <xref href="GUID-49D348C5-534A-3000-A0F4-BB1FE93F569F.dita"><apiname>CSIPUnsignedIntHeaderBase</apiname></xref>. </p> </conbody></concept>