Vtech Vcs754 Firmware Download

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Kellye Tunks

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Aug 4, 2024, 4:23:41 PM8/4/24

to trenejamsoa

Iam able the configure the device and it registers to cucm v 10.5. The registration status changes in about 2 minutes to un-registered. If I reboot the VCS754 it will register to cucm again but, as before, only stays registered about 2 minutes.

But, for some basic troubleshooting of your issue, I'd start with checking that the vtech device is up to date with its firmware (available from vtech) and that any firewalls between the phone and your CUCM are configured to allow full communication between the two (2 minute connections sounds a lot like a firewall timeout).

It turns out there is a "Session Timer" section in the vetch configuration. After trying multiple settings we found that Minimum Value = 90 secs and Max value = 1800 secs seems to work and the devices remain registered.

I am experiencing the same issue with the same phone. My calls are also dropped within the 2 minute time frame and phone becomes unregistered. I enabled the and set the "Session Timer" as you described with no luck. Do you have any suggestions? Thank you for your time.