hi, with respect to question 21.23 I'm a bit confused: from the proctor guide: "all devices will get their MRGL from the Device Pool with the exception of the gateways which have a MRGL assigned at the Device level" To make sure the PSTN callers receive TOH, it's also necessary to create new device pools (without MRGL for example) which will be assigned to the gateways, right? Or is there something I am missing from the proposed solution in the proctor guide? cheers, Juan