Siemens CL75 pinouts
The connector/pinout information may be applied to the Siemens model CL75

 Siemens 12 pin cable connector pinout full pinout for Siemens A52, A55, A56, A60, A65, AL21, AX75, AX72, C55, C56, C60, C62, C65, C70, C75, CF62, CF75, CFX65, CL75, CT56, CX65, CX70, CX75, CXT65, CXT70, CXV65, CXV70, M55, M65, MC60, M75, MT55, ME75, S55, S56, S57, S65, S75, SL5C, SL55, SL56, SL65, SK65, SF65, SP65, 1168, 2218, SX1. also for Xelibri-1, Xelibri-2, Xelibri-3, Xelibri-4, Xelibri-5, Xelibri-6, Xelibri-7, Xelibri-8
Siemens 12 pin cable connector pinout full pinout for Siemens A52, A55, A56, A60, A65, AL21, AX75, AX72, C55, C56, C60, C62, C65, C70, C75, CF62, CF75, CFX65, CL75, CT56, CX65, CX70, CX75, CXT65, CXT70, CXV65, CXV70, M55, M65, MC60, M75, MT55, ME75, S55, S56, S57, S65, S75, SL5C, SL55, SL56, SL65, SK65, SF65, SP65, 1168, 2218, SX1. also for Xelibri-1, Xelibri-2, Xelibri-3, Xelibri-4, Xelibri-5, Xelibri-6, Xelibri-7, Xelibri-8 Siemens DCA-510 cable scheme for A60, A62, A65, AL21, AX72, AX75, C55, C60, C65, C70, C72, C75, CF62, CF75, CFX65, CL75, CT65, CX65, CX70, CX75, M55, M65, M65Rescue, M75, MC60, ME75, S55, S65, S75, SF65, SK65, SL55, SL65, SL65-ESCADA, SL75, SP65 pinout
Siemens DCA-510 cable scheme for A60, A62, A65, AL21, AX72, AX75, C55, C60, C65, C70, C72, C75, CF62, CF75, CFX65, CL75, CT65, CX65, CX70, CX75, M55, M65, M65Rescue, M75, MC60, ME75, S55, S65, S75, SF65, SK65, SL55, SL65, SL65-ESCADA, SL75, SP65 pinout  Siemens DCA-540 USB cable scheme for C65,CF65,CFX65,CT65,CX65,CXO65,CXT65,CXV65, CV65, M65,MC65,S65,SK65,SL65,SP65,C66,CT66,CX66,M66,S66, C70,CX70,CX70,CXT70,CXV70, C72,C75,CC75,CF75,CL75,CX75,M75,ME75,S75,SL75,SXG75, SX1 cell phones cable connector pinout also for A56,C56,M56,S56,SL56,ML56
Siemens DCA-540 USB cable scheme for C65,CF65,CFX65,CT65,CX65,CXO65,CXT65,CXV65, CV65, M65,MC65,S65,SK65,SL65,SP65,C66,CT66,CX66,M66,S66, C70,CX70,CX70,CXT70,CXV70, C72,C75,CC75,CF75,CL75,CX75,M75,ME75,S75,SL75,SXG75, SX1 cell phones cable connector pinout also for A56,C56,M56,S56,SL56,ML56