Aastra
| Any compatible Aastra Handsets require the RJ9 bottom cable to connect | |||||
| Plantronics H251/A | Plantronics CS-540/A | Jabra BIZ 2400 | Jabra 9450 | Jabra 9460 | |
| 6730 | No | No | No | No | No |
| 6731 | No | No | No | No | No |
| 6755 | Yes | Yes | Yes | Yes | Yes |
| 6757 | Yes | Yes | Yes | Yes | Yes |
| 6863 | Yes | Yes | Yes | Yes | Yes |
| 6865 | Yes | Yes | Yes | Yes | Yes |
| 6867 | Yes | Yes | Yes | Yes | Yes |
Please note the Aastra 6730 and 6731 can work by removing the receiver from the socket at the back and replacing it with a headset. There is not exclusively a headset socket on either device
Cisco
| Any compatible Cisco Handsets require the 2.5mm bottom cable to connect | |||||
| Plantronics H251/A | Plantronics CS-540/A | Jabra BIZ 2400 | Jabra 9450 | Jabra 9460 | |
| 303 | Yes | Yes | Yes | Yes | Yes |
| 504 | Yes | Yes | Yes | Yes | Yes |
| 509 | Yes | Yes | Yes | Yes | Yes |
| 514 | Yes | Yes | Yes | Yes | Yes |
| 525 | Yes | Yes | Yes | Yes | Yes |
Gigaset
| Any compatible Gigaset Handsets require the RJ9 bottom cable to connect | |||||
| Plantronics H251/A | Plantronics CS-540/A | Jabra BIZ 2400 | Jabra 9450 | Jabra 9460 | |
| A510 | No | No | No | No | No |
| S510 | Yes | No | No information | No information | No information |
| A540 | No | No | No | No | No |
| C430 | TBC | No | Yes | No | No |
| S650 | No information | No | No information | No information | No information |
| R630 | No | No | Yes | No | No |
| SL400 | No | No | No | No | No |
Polycom
| 321/331/335 require the 2.5mm bottom cable. 450/650 and VVX require the RJ9 bottom cable |
|||||
| Plantronics H251/A | Plantronics CS-540/A | Jabra BIZ 2400 | Jabra 9450 | Jabra 9460 | |
| IP321 | Yes | Yes | Yes | Yes | Yes |
| IP331 | Yes | Yes | Yes | Yes | Yes |
| IP335 | Yes | Yes | Yes | Yes | Yes |
| IP450 | Yes | Yes | Yes | Yes | Yes |
| IP650 | Yes | Yes | Yes | Yes | Yes |
| VVX300 | Yes | Yes | Yes | Yes | Yes |
| VVX310 | Yes | Yes | Yes | Yes | Yes |
| VVX400 | Yes | Yes | Yes | Yes | Yes |
| VVX410 | Yes | Yes | Yes | Yes | Yes |
| VVX500 | Yes | Yes | Yes | Yes | Yes |
| VVX600 | Yes | Yes | Yes | Yes | Yes |