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2NIST-SIP Specific support for IMS headers contributed by Jose Miguel
3Freitas (Aveiro University, Portugal) and  Alexandre Miguel Silva
4Santos (PT Inovacau, Portugal).  It is not part of the JAIN-SIP 1.2
5specification.  Questions about the IMS Support in NIST-SIP 1.2 can be
6directed to  Miguel Feitas <a23875@gmail.com> or the NIST-SIP mailing
7list. To acccess these headers you have to cast the HeaderFactory to
8HeaderFactoryImpl.  This package has been contributed to the public
9domain.
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