I have configured this device per the whitepaper; however I am not able to get outbound calling working. I keep getting the following: 16:18:27.275 CallConf::Rejected [CM103005] Call(1) is rejected: Not Found 16:18:27.275 StratInOut:nCancel [CM104008] Call(1): Call from Ext.116 to 1518XXXXXXX terminated; cause: 404 Not Found; from IP:192.168.5.8 16:18:26.494 CallConf:nIncoming [CM103002] Call(1): Incoming call from 116 (Ext.116) to sip:91518XXXXXXX@192.168.5.2 On the AudioCodes device I am getting the following in the Message Log: Log is Activated 6d:16h:18m:26s ( lgr_TrnkGrp)(35 ) !! [ERROR] #1:TrunkGroup::AllocateEndPoint- Can't find EndPoint for phone number 1518XXXXXXX [Time: 16:18:26] 6d:16h:18m:26s ( lgr_psbrdif)(36 ) !! [ERROR] MotherBoard::GetEndPoint- Can't find EndPoint for Dest:1518XXXXXXX Source:116 SourceIp:10c68e0 [Time: 16:18:26] 6d:16h:18m:26s task GWAP, Un nested AcLockStart [Time: 16:18:26] 6d:16h:18m:26s task GWAP, Mismatch preemption mode [Time: 16:18:26] I am using a Grandstream GXP-2000, and internal calls work flawlessly as do external inbound calls. I am really struggling trying to get this working properly.