Digit discard instructions (DDI) remove parts of the dialed digit string before passing the number on to the adjacent system. A DDI removes a certain portion of the dialed string (called party). Access codes are typically used to make a phone call that will be routed to the PSTN. The PSTN switch does not expect the access code, so the access code must be stripped out of the called party number before sending the call to the carrier.
Digit stripping is configured in the Called Party Transformations section by selecting a Discard Digits setting from the drop-down menu. Discard digits can be configured at the route pattern and at the route group details level of the route list.
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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
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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 ...