Hi Guys I’m trying to use FS (1.5.8b from last week) as an SBC and load-balancer (using mod_distributor). It is load balancing between several FS conference nodes. It’s working a treat, apart from one scenario : Say conference xyz is already running on conf-node-1. Next incoming call is sent to conf-node-2, pin is collected, and conference xyz is identified as the required conference. Conf-node-2 checks presence, and sees the conference is already running on conf-node-1, and does a deflect. We add some query params to the refer-to URI to tell conf-node-1 not to collect the pin, but put the caller straight into the conference. e.g <action application="deflect" data=“sip:1234@10.1.1.2;conf=xyz" /> In the REFER I can see the params : Refer-To: <sip:1234@10.1.1.2;conf=xyz> But they are not present on the request URI or To header in the INVITE to conf-node-1. So conf-node-1 requests the PIN again. Is there any way I can pass this info to the other conference node by using the REFER? Thanks for your help. Phil