I'm bringing up some Diva UM PRI/T1-24 PCIe cards under RHEL 6.9, all drivers and software installed without errors or problems, web GUI shows everything is working fine. I'm trying to do simple tty modem connections, and am getting no modem modulation at all for both incoming and outgoing, just dead air. Is there some setting required to enable simple analog modem operation? Does this require a license, I thought the UM flavor of these cards come pre-licensed with this feature? Also, I've configured my T1's as follows: robbed bit, b8zs with esf, loop start Interestingly, the calls do go out, I receive phone calls from the Diva card, and it also answers calls, just no modem modulation, e.g. no screeching modem sound at all, just dead air. Connections time out after about 60 seconds.
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