UC 540 is behind firewall, what ports need to be opened & forwarded to UC for IP Communicator 8.6 to connect from Internet?

UC 540 is behind firewall, what ports need to be opened & forwarded to UC for IP Communicator 8.6 to connect from Internet?
tjmustangAsked:
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agonza07Connect With a Mentor Commented:
You need to use VPN. IP Communicator was not designed to use open ports through a firewall. For that matter, I dont think the UC series supports off-site phones. It'll work, but I dont think its supported.

http://www.experts-exchange.com/Networking/Telecommunications/IP_Telephony/Q_26662095.html
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tjmustangAuthor Commented:
I thought it would be possible since there is Cisco Jabber for Droid and Iphone

FYI..................Cisco TAC told me today the following phone is supported for remote.....using the VPN

Cisco SPA525G2 5-Line IP Phone
Fivelines and color backlit display for easier navigation
Enhanced Bluetooth using mobile link for added freedom
Enhanced Bluetooth via Mobile link
VPN, 802.11 Wi-Fi, MP3, and picture player support enhanced security and flexibility
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agonza07Commented:
I think the 7945/65s are also supported since they have a built in VPN client. You might to check in those too
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