FAQ/How can I obtain highest compatibility between my snom phone and any RFC compliant SIP registrar
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Answer
In case of registration problems with unknown RFC 3261 compliant SIP registrars the following options may be configured via the phone´s web interface:
Line page SIP tab:
Long SIP-Contact (RFC3840) -> "off" Support broken Registrar -> "on"
Advanced page:
Filter Packets from Registrar -> "off"
