We got an UC540 here, to replace a SIP Asterik server. The phones we have now are Cisco 9742.
For the local users, everything works fine, the remote users a are a pain ....
Since the remote site is continously connected to our site over a GRE tunnel and everything on the tunnel is encrypted, we do not need VPN, SSL, firewall and/or NAT.
I registered the 2 phones locally (got their software upgrades), wiped the network settings, entered everything static ( IP address/28, router, TFTP-server) but after startup, they configure IP and then start 'Registering' endlesly.
Anyone has a clue what's going wrong? I'm quite new into VoIP, if that counts as an apalogy for me simplifying things.
BTW, English is not my native language, so sorry for the faults, alltough some of them could be typo's
Found out that the TFTP server can not be the WAN address, so placed the loopback address to the WAN interface. When debugging TFTP, we see the 2 phones accessing the TFTP server, but all of a sudden, the needed files are missing, since they are looking in a non-existent folder for ring tone, locale file,... Duh?
When they are connected strait to the UC, everything works, but remotely via the TFTP, they are missing files?
Anyone knows what the next step is?
thanks for responding!
Got everything working now. Got my console cable, backed up the config, started reading it through and tossed quite some lines. Dropped the 8 PoE ports, took a switch where all phones will come to and connected that switch to the WAN port of the UC. Everythings is up and running now. Sorry for all the nice extra's on the UC that are now shut or not configured, but I only needed the Voice working, no VPN, no Firewall, no Wireless, no voicemail, no video,....
Why did they stop producing those earlier SPA.... stuff? Now we payed a whole lot more for functionalities we do not use now and will not use in the near future (2 or 3 years).
BTW, thanks for all the tips and tricks. :-)))