Hello ... when i do a "list session" I am noticing alot of customers listed as "UNKNOWN" in the protocol type field ... some are showing as PPP but they all should be ... any ideas what is wrong??

SESSIONS
Name                             Conn_Type Prot_Type
EBJ                              WAN       UNKNOWN
bnk                              WAN       UNKNOWN
cra                              WAN       UNKNOWN
jlm                              WAN       UNKNOWN
rmw                              WAN       PPP
Pyke                             WAN       UNKNOWN
cars                             WAN       UNKNOWN
daja                             WAN       UNKNOWN
dove                             WAN       UNKNOWN