| Model No. | Description | Remark |
| A6CBMC | MAIN SERVICE UNIT, consisting of (Plastic Cabinet + A6PWUA + A6MBUC) | Standard Shipment |
| A6PWUA | POWER UNIT | Spare Part |
| A6MBUC | MOTHER BOARD UNIT | Spare Part |
| A6TKUB | TRUNK UNIT, consisting of 4 CO Line Ports | Expansion Card |
| A6TKUBF | LINE REVERSAL TRUNK UNIT, consisting of 4 CO Line Ports (with Line Reversal + Metering Pulse Detection Facility) | Expansion Card |
| A6TKUEF | LINE REVERSAL TRUNK UNIT, consisting of 4 CO Line Ports (with Line Reversal + Caller ID Facility) | Expansion Card |
| A6TKUET | LINE REVERSAL TRUNK UNIT, consisting of 4 CO Line Ports (with Line Reversal + Dial Tone Detection + Caller ID Facility) | Expansion Card |
| A6DTKA | ISDN TRUNK UNIT, consisting of 2 ISDN CO Line ports (EURO ISDN S0 interface, 2B+D/port) | Expansion Card |
| A6STUA | KEY STATION UNIT, consisting of 8 Key Station Ports | Expansion Card |
| A6HYUA | HYBRID STATION UNIT, consisting of (2 Key Station Ports + 6 Single Line Station Ports) | Expansion Card |
| A6SLUA | SLT STATION UNIT, consisting of 8 Single Line Station Ports | Expansion Card |
| A6SLCA | SINGLE LINE STATION CARD, consisting of (2 Single Line Station Ports + SLT ringing interface) | Expansion Card |
| A6VSCA | VOICE SERVICE CARD, consisting of 2 Voice Channels (60 seconds per channel) | Optional Card |
| A6RGCA | RING GENERATOR CARD (supply SLT ringing current for A6HYUA and A6SLUA) | Optional Card NOTE |
| A6ELCA | INTERCOM LINK CARD (supply 8 Intercom Links) | Optional Card NOTE |
| D1CIDC | FSK/DTMF CLI INTERFACE, one Channel of POTS Caller Number Identification card. | Optional Card |
| A6MFCA | MULTI FUNCTION CARD, consisting of (2 Sensors + 2 Relays + 2 Door Phone Ports) | Optional Card |
| A6RSCA | RS232 CARD (for SMDR, Serial Port Design) | Optional Card |
| A6RPCA | REMOTE PROGRAMMING CARD (standard Modem design) | Optional Card |