I'm running FusionPBX version 5.3.8.  Inbound and outbound talls to/from extensions work fine.  However, in a ring group which has several extensions plus an outbound external number, the origination to that number always fails, rejected by the VSP.  In the CDR, it shows CODEC L16/L16 which is do not understand.  I have onl ULAW enabled throughout the system.  
A direct call dialed to the same external number from an extension goes through. What am I missing?
				
			A direct call dialed to the same external number from an extension goes through. What am I missing?