Hi All, I could not make the BLF working in multi tenant environment. Any help is appreciated. Discussion with BKW, he suggest to use multiple profiles. But if I want to use this box for x number of tenants then I need to setup x no of profiles. I like to use one profile for all my tenants. Multi tenant settings works for months without any issue. Here is my lab setup *compa.mydomain.com* Ext 201 - Cisco 504G + SPA500S Expansion Module - BLF 202,203 Ext 202 -SPA942 Ext 203 -SPA942 *BLF : Not working reliably .* *compb.mydomain.com* Ext 201 - Aastra 57i and Topkeys Configured for BLF 202,203 Ext 202 - Aastra 6731i Ext 203 - Aastra 6731 *BLF: working for couple of hours then completely stop working. A reboot of the phone required* *internal profile - The following lines comments* <!--<param name="force-register-domain" value="$${domain}"/>--> <!--<param name="force-subscription-domain" value="$${domain}"/>--> <!--<param name="force-register-db-domain" value="$${domain}"/>--> --- Any help is appreciated how to make it work with single profile Thanks Lloyd