We recently installed a right FAX 9.4 in our customer and it was all fine except in one issue. When a RightFAX client is sending a document and the receiving or destination fax machine is in FAX mode with 3 to 4 rings before FAX tone, the FAX fails consistently and the sender, RightFAX client will say the line is busy. But when I recreated the issue and adjust the fax machine number of ring before fax tone to 1, the FAX goes through successfully.
However, It is not acceptable to our customer that the workaround is not globally applicable considering other FAX machines out there that has 4 rings before fax tone set up.
I’ve already read some documents for this application including its installation and configuration but I'm clueless which settings is specifically related to the problem. I’ve tried make some adjustments in the CED tone (time that right fax will wait for a fax tone) but still not working.
I hope there is someone here that can help me with this.
Thank you in advance.
You see something simliar to this on RF---h323---CUCM----Gateway---PSTN scenarios, too.
RF tries to put the h245address in the facility, which CM doesn't always like or act upon. Hence media negotiation fails, and the voice call never gets nailed up. You can tweak the h245stage parameter in the Brooktrout driver to change this. I usually set that to 1, which makes RF put the h245address in the alerting, I believe.