Hello.
I have 2 yeastar, 1 s100 and 1s20, i connect the 2 pbx.
When i call PBX A to PBX B for extension in PBX B does not appear the Extension (ex: 1001), but the IP off my internet.
it is possible to display the extension?
It is strange to display the IP of your internet. Normally, it should display the extension number.
Which brand of IP phone do you connect to S PBX? Does this issue happen on all your IP phones?
How do you connect your two S PBX? Is it through SIP peer trunk? If not, please take below article for reference: