uni-tel One-connect
See below for a list with supported features when using the Gigaset PRO IP Devices on the providers network.

| Feature | DE310 / DE410 IP PRO | DE700 / DE900 IP PRO | N510 IP PRO | N720 IP PRO Multi cell | Maxwell 10 | Maxwell 3 / Maxwell Basic |
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| Software release: | 02.00.03 | 02.00.07 | 42.075 | 72 | 1.0.40 | 2.12.4 | | Basic Call | Yes | Yes | Yes | Yes | Yes | Yes | | Calling line (CLIP) | Yes | Yes | Yes | Yes | Yes | Yes | | Connected line (COLP) | No | No | No | No | No | No | | Anonymous call | Yes | Yes | Yes | Yes | Yes | Yes | | Do Not Disturb | Yes | Yes | No | No | Yes | Yes | | Message waiting | Yes | Yes | Yes | Yes | Yes (does not work on firmwares lower than 1.0.40) | Yes | | Call list/history | Yes | Yes | Yes | Yes | Yes | Yes | | Voice mail deposit/retrieval | Yes | Yes | Yes | Yes | Yes |
| | Call waiting | Yes | Yes | Yes | Yes | Yes | Yes | | Call Hold / Toggle | Yes | Yes | Yes | Yes | Yes | Yes | | Call forward (CFU) | Yes | Yes | Yes | Yes | Yes | Yes | | Call forward (CFNR) | Yes | Yes | Yes | Yes | Yes |
| | Call forward (CFB) | Yes | Yes | Yes | Yes | Yes | Yes | | Call Transfer attended | Yes | Yes | Yes | Yes | Yes | Yes | | Call Transfer unattended | Yes | Yes | Yes | Yes | Yes | No | | Completion of Calls to Busy Subscriber (CCBS) | No | No | No | No | No | No | | DTMF (RFC2833) | Yes | Yes | No | Yes | Yes | Yes | | Conference 3pty | Yes | Yes | Yes | No | Yes | Yes | | BLF Busy / Idle indication | Yes | Yes | n/a | n/a | Yes | Yes | | Call pick-up direct | Yes | Yes | Yes | Yes | Yes | Yes | | Call pick-up group | No | No | No | No | No | No | | Call pick-up BLF | Yes | Yes | n/a | n/a | No | Yes | | Session Audit | No | No | No | No | No | No | | Call completed elsewhere | Yes | Yes | Yes | Yes | not supported by Maxwell until phase 2 | Yes | | UDP/TCP Protocol | UDP | UDP | UDP | UDP | UDP | UDP | | Central Phonebook | Not tested | Not tested | Not tested | Not tested | Not tested | Not tested | | Auto provisioning | No | No | Yes | No | No | Yes |
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