I have a somewhat tricky configuration to make happen and hope you can help me.
I have a UC560-BRI-K9 (located in Germany) that is connected via BRI/ISDN and also utilizes an external SIP-Trunk.
The UC is shared by two related businesses and the Trunks are separated using COR-Lists.
I am now tasked with making both Faxes and Modems work. Via the SIP-Trunk, I only need T.38 to work for inbound and outbound faxes; no problem here. On the BRI-Port however, it is quite a different story: Here, I need both Fax and Modem working. The modem functionality is required by a Power Generator to call for maintenance in case of failure (or be called on a designated number for preventive checks). Furthermore, there also is a Postage Meter that also requires outbound modem comms.
Digging through the configuration documents, I see that the UC500-Series does not support Fax-passthrough and modem-passthrough to be enabled simultaneously as they are handled similarly.
If anyone has come across a solution for my problem, please let me know.
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