CoSystems is a leading vendor of legacy networking software building blocks: SIP, MGCP, MultiLinkPPP/VPN, ATM, ISDN, Frame Relay, X.25 and many resuseable software modules. Our software has been implemented in a myriad of equipment from leading telecomm vendors.

We are re-building site. In the meantime, please contact us as follows:

+1 (408) 522-0500

General inquiries -> info@cosystems.com

Support -> support@cosystems.com

Sales -> sales@cosystems.com