# ezk-sip-ua

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Incomplete low level SIP user agent utilities.

- Create/remove bindings via `REGISTER`
- Create and tear down `INVITE` sessions
- `100rel` and `timer` extensions built in

Following RFCs were used:

- [RFC3261](https://www.rfc-editor.org/rfc/rfc3261.html) - SIP: Session Initiation Protocol
- [RFC3262](https://www.rfc-editor.org/rfc/rfc3262.html) - Reliability of Provisional Responses in SIP
- [RFC4028](https://www.rfc-editor.org/rfc/rfc4028.html) - Session Timers in SIP