This is maybe the weirdest issue I ever dealt with ,
so we are an enterprise that has more than 10 branches "small ones" most of them connected with an E1 link .
all branches use the same one gateway that is connected to the PSTN with an E1 PRI link . anyway my problem is that only one branch and not any other, face a voice quality issue that is when an ip phone user at that particular branch initiates a call to the PSTN the PSTN phone hears the IP phone user but the IP phone user cant hear more than some noise. note that if the user recieves a call from PSTN voice works two-way with no issues.
This sounds like Inbound and Outbound calls from Branch to PSTN are taking different paths. An outout "Show voip RTP connection" and "Show voice call stat" from PSTN GW for both working (PSTN Inbound) and Non-working (PSTN Inbound) should be good to start with.
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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
the softkeys. You enable or disable them via TCL. Here is the long
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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 ...