Configure cisco C60 (Tandberg) Codec standalone to join Webex meetings via SIP

Job ID: 31550708

Budget: $30 – $250 USD

Need somebody who can configure a Cisco C60 Codec as Standalone device (No Video Communication server or similar) in order to join Webex meetings via SIP call. A free sip registrar like Linphone.org should be used, alternatives are appriciated.
If possible there should be no reucuring cost in the solution (e.g. Hosted SIP registrar/H323 Gatekeeper like pexip)
As deilvery there is either a complet configuration document expected or and lodable config file).
A network configuration suggestion for the firewall should be proposed as well.