Could anyone please ley me know of the required software level required for an IPLDK20 VOIM to run IP Hardphones via external routers. I can connect directly or via local LAN no problem but when I attempt to use phone via WAN it will not be recognised by the system and will not sync up although I can see it in PC Admin. The current VOIM level in is GS66H-1.0Ba.
Thanks.
Thanks.