See below for a list with supported features when using the Gigaset PRO IP Devices behind a Tiptel PBX System, tested with V 6.4.10.755 / stable. Testresult provided by Tiptel. 
| Feature | N510 IP PRO | N720 IP PRO | N870 IP PRO | Info |
|---|
| Software release | 42.247 | 70.113 | 2.23 |
| | Basic Call | Yes | Yes | Yes |
| | Calling line (CLIP) | Yes | Yes | Yes |
| | Connected line (COLP) | Yes | Yes | Yes |
| | Anonymous call | Yes | Yes | Yes |
| | Do Not Disturb | Yes | Yes | Yes |
| | Message waiting | Yes | Yes | Yes |
| | Call list/history | Yes | Yes | Yes |
| | Voice mail deposit/retrieval | Yes | Yes | Yes |
| | Call waiting | Yes | Yes | Yes |
| | Call Hold / Toggle | Yes | Yes | Yes |
| | Call forward (CFU) | Yes | Yes | Yes |
| | Call forward (CFNR) | Yes | Yes | Yes |
| | Call forward (CFB) | Yes | Yes | Yes |
| | Call Transfer attended | Yes | Yes | Yes |
| | Call Transfer unattended (Blind) | Yes | Yes | Yes |
| | Completion of Calls to Busy Subscriber (CCBS) | Yes | Yes | No |
| | DTMF (RFC2833) | Yes | Yes | Yes |
| | Conference 3pty | Yes | No | Yes |
| | BLF Busy / Idle indication | No | No | No |
| | Call pick-up direct ( * 81* extension) | Yes | Yes | Yes | Only for member in same pickup group | | Call pick-up group ( * 81* group ) | Yes | Yes | Yes | Only for member in same pickup group | | Call pick-up BLF | No | No | No |
| | Call completed elsewhere | Yes | Yes | Yes |
| | Phonebook local | Yes | Yes | Yes |
| | Phonebook PBX (XML) | Yes | Yes | Yes |
| | Phonebook PBX (LDAP) | No | No | No |
| | Autoprovisioning | Yes | Yes | Yes |
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