Yes it compatibile !!! I change it all ok but with litle less signal streinght,but It have one more problem paralel with switch About temperature I work with 327-335 C and nothing happend to me, all works never kill anything !!!
But for SIEMENS CPU be extra carefull never heat IC in the midle you will brake it in the sec.also sagem IC-s NOKIA,ERICSSON, PHILIPS,ect ect no problem on that temperature
All the best mightym