We have several IP phones (Cisco7961) which didn't work since yesterday. Some work but some don't work at all : we cannot pass or receive calls...
We tried to reboot them several times but unsucessfuly.
We made a Ethereal capture and we noticed that during the exchanges of messages between the call Manager and the telephon (SKINNY Protocol), we have a missing message:
[TCP Previous Segment Lost] SelectSoftkeysmessage
For the phones which work, we don't have this lost segment...
Do someone have an idea?
Thanks you by advance for your help