Just A Quick Question:
Are you trying to connect a TelexBeltpack to a clearcom system, or a telexheadset to a clearcom beltpack? if it is the latter, I am fairly sure that they use the same pinout, if it is the former, it depends on the system.
I take it as the OP has a TelexHANDSET - ie. Telephone style that he wishes to connect to a CC master station or beltpack.
The Blazon complicates things. I think if it's a 4 pin connector on the handpiece and that includes the Strobe then someone's done some customising of the device and hence your standard pinouts are out the window...
The TelexHandset (like their HS6A) has the same pinout as the clearcom headsets and the other telex headsets. If it's not working I'd check the phone itself...reduce complications and plug it straight into the base station.