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Call from MX300 to CTMS for scheduled call via CTS-MAN


I have following scenario.

MX300, EX90, C-Series registered to VCS. VCS and CUCM connected via SIP trunk. CTS and TX Series registered to CUCM.

As a scheduling device is used CTS-MAN. As a primary scheduled device for multipoint meetings we have CTMS and we have also TP Server.

Calls from CTS and TX Series to CTMS for scheduled calls work perfectly.

When we have scheduled call for multipoint meeting including for example MX300 then we have suprise.

MX300 is sending the call for scheduled meeting in different syntax.

Instead of <CTMS_Number>**<Conference_Number> is sending:


I have fixed it with translation on VCS but it is quit suprising I had to do that.

I have not found any note in documentation or similar notes.

Is it correct behavior and has it to be fixed on VCS with translation as we did?

Many thanks,