Siemens Gigaset S450 IP
Just replaced my C450 IP with S450 IP, mostly for multiple SIP accounts support.
Good things:
- can connect to up to six SIP accounts at the same time, plus gigaset.net
- can map SIP account and fixed line to DECT phones (both outgoing and incoming calls)
- reasonable DECT coverage
- NAT traversal using STUN
- works with asterisk
- S45 handset can be registered to multiple bases, allowing you to chose base or just best signal base
Bad things:
- can not choose what SIP account to use for outgoing calls on a call-by-call basis
- gigaset.net calls never worked for me
- R-key does not work with SIP
- no MWI (Message Waiting Indication) for VoIP calls
- slow handset response sometimes (tested with S45, C45 and C46 handsets)
- no automatic phonebook synchronization between handsets
One very interesting feature would be the possibility to use the Phone Line as a regular FXO port, allowing PSTN-to-VoIP and VoIP-to-PSTN calls.
