I HAVE CUCM 7.1 AND 3845 ROUTER AS H323 GATEWAY. I CAN NOT RECIEVE CALL ID FROM THE PSTN TO THE IP PHONES.
I ALWYA RECIEVE ( FROM UNKNOW NUMBER ).
CONNECTION PLAR OPX 120
THIS IS THE FXO PORT CONFIGURATION I HAVE.
Are you the end use trying to fix things yourself ?
For start. configure an appropriate cptone for better chances.
And, please, use lowercase as everybody else.
Sometimes we need to inform the provider to enable caller id (for cisco gateway). i am not sure what they do from their side
But it happened manytimes to me. it worked. Ana. phones will always show the caller id.