Nowadays, the data search concept on a peer-to-peer (P2P) network is more and more widely used. A new approach of this technique is the use of peer-to-peer technology for streaming video multimedia applications. The mobility of multimedia clients, and even the network architecture in some cases, must be integrated to every level of platform conception models so that efficiency, adaptability and extensibility may be optimal. The throughput on future-generation wireless networks will allow the dispatching of several simultaneous multimedia streams. Moreover, the ability for those networks to handle download and upload throughputs will provide real interactivity in future multimedia applications. We have developed a cache sibling architecture called PACS which aims at increasing data exchange between caches. This article deals with document exchanges between caches thanks to a P2P platform.