[VoiceOps] Preventing random SIP connections to handsets

[Alex Balashov]

That said, it is baffling to me that phones accept INVITEs unchallenged 
from anywhere but $REGISTRAR_IP/$OUTBOUND_PROXY_IP.

-- 
Alex Balashov | Principal | Evariste Systems LLC
303 Perimeter Center North, Suite 300
Atlanta, GA 30346
United States

Tel: +1-800-250-5920 (toll-free) / +1-678-954-0671 (direct)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/