ICs for Communications ISDN Echocancellation Circu.
Siemens Semiconductor Group
PSF21911 - ISDN Echocancellation Circuit for Terminal Applications IEC-Q TE
ICs for Communications ISDN Echocancellation Circuit for Terminal Applications IEC-Q TE PSB 21911 Version 5.2 PSF 21911 Version 5.2 Data Sheet 11.97 .
