Does asterisk "speak" corenet?

Hi,

we plan to switch from Hipath (4000) to asterisk in the near future. While the transisition ist in progress, interoperability between both systems - including the pbx-features of both - is necessary.
As I understand it, the only possibility to accomplish this is getting asterisk speaking Siemens’ propriary CoreNET-protocol. Is this possible?
Thanks in advance

Thomas Brenner