Iam trying to find out how srst handles the inbound digits from the TELCO> I have tested a few scenarios and found the following. If I have 4 digits extensions and Telco send 4 digits all is okay. If I have 5 digit extensions and the TELCO sends 4 digits I need a num-exp statement to handle the digits. Next is I have 5 digit extensions and get 10 digits from the TELCO and I have NO num-exp statement , it works , why ?? I have tested all kinds of ways and I cannot make sense of this. basically it looks like you need the num-exp to match the TELCO digits but with 10 digits from teh TELCO it works fine without digit manipulation.
The phones are registered to the SRST router with say 5 digit extension. If DID is 5 digit, then fine, the router gets the 5 required digits and easily identifies the ephone-dn.
If 5 digit extension, and DID is 4 digit, then also it is clear that you will need to make the number as a 5-digit number for the SRST router to ring the ephone-dn. Hence you use num-exp.
Now the real questions, is why is it ringing when we have 5 digit extension and DID is 10 digit. In this case, you need a dialplan-pattern command to convert the 10 digit number to 5 digit. Does your config have this command? Can you post your config where you receive 10 digit from Telco and it rings a 5-digit extension?
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The short answer is that you don't.... That isn't entirely true while at
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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 ...