When we register a 8861 via SIP to an Asterisk box everything works well with a single line. Once we attempt to register multiple lines the phone goes into a continous loop fetching the SEP.cnf.xml and re-booting approximately every 2 minutes.
Everything appears to be fine other than this issue. When registered with only 1 line the phone makes and receives calls. All other behavior of the phone is expected under 1 line.
Any help would be greatly appreciated because I am stumped at this point.
Asterisk 13.6.0
Phone Version 10-3-1-20 (Latest)
I have attached a copy of the cnf.xml