these phones randomly appear to stop working, i mean: SIP signaling seems to work correctly (the phones ring if called and it is possibile to make calls..) but there's no audio either way.... it also happens that if in call, call flow stops flowing and then disconnects.
the only way to make them work again is by unplugging the network cable to unpower them (i tried the restart and reset commands from cli: the phones go through all the registration process but they still don't establish audio)
reading through the forum, it seems i'm hitting these known bugs:
but i'm already running the latest phone load: CP3905.9-4-1-0 (this is what i can see from the phones web interface.. from the cme cli the show register pool command prints Current Phone load version is Cisco-CP3905/9.2.1 for every phone..)
i'm not really sure of this, so i can only interpret the situation from the overall behaviour of the phones: this way it seems that the web interface is somehow not correct, while it is the command line output (so the short answer is, no, you shall not trust the phone web interface)
The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
the softkeys. You enable or disable them via TCL. Here is the long
answer. Be sure to read the whole thing or e...
Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...
This document describe how DST changes and how time changes are
implemented in DST. Daylight Saving Time (DST) is the practice of
setting the clocks forward 1 hour from standard time during the summer
months, and back again in the fall, in order to make b...