All just playing with Multi-tenant config, and got all the dialplan and domain specific directory settings kinda all working.

All the phone register as extension@domain.com and I've added SRV records for _sip._udp.domain.com to my local DNS, and x-lite and SJ-phone correctly resolve this this to my server IP from DNS.

I can make calls using extension@domain.com toward FS and the call correctly routes in the dialplan - when Sofia originates the new outbound leg using:

<include>

<context name="domain.comk">

<extension name="unloop">

<condition field="${unroll_loops}" expression="^true$"/>

<condition field="${sip_looped_call}" expression="^true$">

<action application="deflect" data="${destination_number}"/>

</condition>

</extension>

<extension name="domain_2000">

<condition field="destination_number" expression="^(2000)$">

<action application="set" data="domain_name=domain.com"/>

<action application="set" data="domain=domain.com"/>

<action application="bridge" data="sofia/domain/2000" />

</condition>

</extension>

<extension name="vodafone_1000">

<condition field="destination_number" expression="^(1000)$">

<action application="set" data="domain_name=ims.vodafone.co.uk"/>

<action application="set" data="domain=ims.vodafone.co.uk"/>

<action application="bridge" data="sofia/ims.vodafone.co.uk/1000" />

</condition>

</extension>

FS still puts its IP as the domain portion of the From and To fields in the INVITE:
From: "+441635698866" <sip:+441635698866@192.168.0.56>;tag=cg7H7SvjvrSmp

Neill....;o)

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