| SIP (RFC3261) implementation | |
| https://gitlab.linphone.org/BC/public/belle-sip | |
| belle-sip-9999 | GPL-3 |
| download | nest |
| belle-sip-5.3.1 | GPL-3 |
| download~amd64 ~x86 | nest |
| belle-sip-5.1.3 | GPL-3 |
| download~amd64 ~x86 | SwordArMor |
| belle-sip-4.4.34 | GPL-3 |
| downloadamd64 | yuego |
| belle-sip-4.4.0 | GPL-3 |
| downloadamd64 | yuego |