In this paper, we designed and implemented an integrated wireless system, namely a SIP-based MIP6-MANET system. This SIP-based MIP6MANET system is an integration and implementation of Mobile IPv6 and SIP-based mobile ad hoc networks (MANETs). To support mobile multimedia services, this work is the first result to combine session initiation protocol (SIP) into the integrated MIP6-MANET system. Our actual system implementation was built on the Linux OS (2.4.22 Kernel), the Orinoco IEEE 802.11b wireless card, and MIPL (mobile IPv6 for Linux), where the router advertisement and solicitation and binding update packets were adaptively modified and redefined to achieve the real implementation of the SIP-based MIP6-MANET integrated system. Our SIP-based MIP6-MANET system utilizes the IPv6 stateless address autoconfiguration (SAA) mechanism to automatically get a care-of-address (CoA) without CoA address management from the IPv4-based DHCP server. The SIP-based MIP6-MANET system supports the I...