# Interconnections

- [Merging two MikoPBX](/mikopbx/english/faq/interconnections/mikopbx-2-mikopbx.md): Analysis of a case involving the integration of two MikoPBX systems
- [Integration of MikoPBX and Grandstream UCM6202](/mikopbx/english/faq/interconnections/mikopbx-and-grandstream-ucm6202.md)
- [MikoPBX and FreePBX (PJSIP)](/mikopbx/english/faq/interconnections/mikopbx-and-freepbx-pjsip.md): Instructions for integrating multiple PBX systems
- [MikoPBX and FreePBX (IAX)](/mikopbx/english/faq/interconnections/mikopbx-and-freepbx-iax.md): Instructions for connecting multiple PBX systems
- [WireGuard - VPN](/mikopbx/english/faq/interconnections/wireguard-vpn.md): Example of connecting two PBX systems into a private WireGuard network.