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"
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