AEI bought out Siemens Brothers, so this page includes both companies PAX and PABX systems. PABX No. 97 - Also known as the AEI PABX No. 4 PAX17 PAX21 PAX35 PAX36 PAX40 PAX45 PAX61 PAX65 PAX67 PAX70 PAX75 PAX77 PAX222 RELAY No. 1 RELAY No. 2 S15 S16 S51
AEI bought out Siemens Brothers, so this page includes both companies PAX and PABX systems.
PABX No. 97 - Also known as the AEI PABX No. 4 PAX17 PAX21 PAX35 PAX36 PAX40 PAX45 PAX61 PAX65 PAX67 PAX70 PAX75 PAX77 PAX222 RELAY No. 1 RELAY No. 2 S15 S16 S51
