Digit Missing while dialing conference passcode

[Abubakar Siddique]

Good Day Folks, 

I am using CME2911 with IOS version 15.2 and telephony service is 9.1. recently i started to face an issue regarding conference on tollfree number. i.e 800 number. i am able to dial the number and AA speaks. but when i try to dial in the passcode it says that you have entered a wrong pattern. suppose i dialed 9743201 as passcode. the autoattendant speaks that you have attempted the code 973201 which it says invalid even though i am dailing it correct. i have tried to wait 1 sec for dialing each digit but it doesnt work. its happening with all my other passcodes. seems CME is not getting correct number or missing something or is there a bug causing this issue? 

your assistance will be much appriciated. Thanks

[R0g22]

What is your ISP termination ? SIP/PRI/FXO ? Do you have any logs to look at ?

[Abubakar Siddique]

We have FXO lines, and we got this conference service from ISP, i am confused if this problem is from ISP side because rest of the sites are working normal. i did not look into the logs, even if i did i wouldnt know where to look for the problem as this is the first time i am even having trouble with the system. i can post the logs details if you want , please just let me know which logs do you want. 

[R0g22]

Take a PCM instead -
https://www.cisco.com/c/en/us/support/docs/voice/h323/116078-technologies-technote-commandrefe.html

[Abubakar Siddique]

tried to call the conference and passcode are also not working for other sites, system doesn't repeat the exact number after i have dialed them, is this possible the service provider's system could be misconfigured? because these digits are terminating on their system

[R0g22]

Can’t you take a pcm rather than just taking a wild guess as to whose issue it is ?