This may be more of a firewall issue but thought I would start here since it involves phones. Scenario is a 2900 running CME 9.0. ASA running 8.4(4)1. is in between phones and CME. 7962 phones handle SCCP inspection better than older phones. The symptom is that if you try to make another call immediately after hanging up on the 7940 phones you get a 1 to 3 second delay before dial tone comes in. 7962s don't have this issue. Does anyone know of a way to work around this to get the older phones to play nice?
Not to mention that with newer code firmware releases the sccp version changes and you might have to upgrade the firmware on your asa as well for it to decode the sccp version else it might discard them.
So as Paolo pointed not a good design.. its better to remedy a bad design at the beginning else, retrofitting a bad design might be very painful to you as well the customer.
I know it is a bad design but the customer dictated this design for several reasons so I am stuck with it. I guess that Cisco probably could have addressed this with the older phone but since they are EoL they would prefer that new phones were purchased.
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...