I have six Cisco 7841 phones connected from a remote site via MRA with Persistent Credentials enabled. Since they are in locked sections of the remote buildings, I was asked to configure them so they should require no human interaction to reconnect to the CUCM after a power or internet outage (Manual reboot, requiring credentials to be entered, etc.) Now onto my problem.
A power or internet outage event happens at 11:55pm CST for one of the remote phones.
[ 11:55:57p m, 08/03/18] TCP-timeout
[11:56:10pm, 08/03/18] Connection failure: enterourserver.domainhere.com
[12:11:23am, 08/04/18] Mobile Remote Access: disconnected
[12:11:23am, 08/04/18] TFTP Timeout: SEPXXXXXXXXXXXX.cnf.xml
[12:11:28am, 08/04/18] Mobile Remote Access: disconnected
[12:11:33am, 08/04/18] User authentication failure
At this point the phone is Unregistered in the CUCM and is displaying a screen on the phone saying:
Verify user name and password and try again
Remember the no human interaction caveat? That's what I'm stuck on. See when you press the retry button, the phone works fine. If you browse to the status messages while the phone is still displaying that error, the first message is a successful connection. When you exit the settings menu the phone is registered.
The restart cause in Network Statistics shows: Restart Cause: UCM-closed-TCP
Any ideas on how to avoid this error screen?
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That is good to know! Thank you for informing me of this.
Unfortunately I am required to find another solution, because they do not want the user to have to input any credentials into the phone as is required by MRA. They would like the phone to configure itself via TFTP. Am I correct in thinking the 7841 does not have a built in VPN?
In this thread Nipun asks " On CUCM, go to Unified Reporting >> Unified CM Phone Feature List. Do you see 78XX listed under Phone-vpn feature ?"
I did not see any VPN entries under the 7841. But when you reset the Service Mode on a 7841 it warns the process will deactivate any VPNs that are configured, is this a mistake or can you actually configure a VPN in a 7841?
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I have been tasked with configuring a Cisco 7841 IP Phone to be able to connect to our Call Manager from any network, utilizing our Fortinet 200E Firewalls.
The idea is the ability to plug this 7841 to any internet connected network and have it self configure and talk back to our Call Manger via TFTP to get its configuration. The phones are currently configured with MRA but as that does not support Extension Mobility the change to a direct connection was requested.
I have a few questions I need answered before I can procede with this.
Notably, will I require the MPP version of the firmware to accomplish a connection like this?
Also, will I need to open the Call manager to a public IP that I program into the Phone's TFTP settings?
Will the phone need to be configured with a static IP or can it be left in DHCP with the Alternate TFTP option set to the public IP of the Call Manager?
I have been rather unsuccessful in finding any information on these specific connection requirements in searches on these forums and Google, and was hoping to get a little more information.
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