Siemens Gigaset

N510 IP PRO

• supports 6 GAP handsets
• 6 handsets
• up to 4 simultaneous calls

connecting the N510 IP PRO

Under Settings » Telephony » Connection, the following settings are needed:

• Connection name or number: <anything>
• Provider: Other provider
• Authentication name: <username>
• Authentication password: <password>
• Username: <username>
• Display name: <anything>
• Domain: ackspace.nl
• Registration server: sip.ackspace.nl
• Proxy server port: 5060
• Registration refresh time: 110
• STUN enabled: Yes
• STUN server address: stun.ekiga.net
• STUN server port: 3478
• STUN refresh time: 240
• Outbound proxy mode: Never
• Select network protocol: Automatic

Also, make sure that under Settings » Telephony » Advanced VoIP settings, SIP port: (or its random range) does not conflict with other SIP devices behind the same NAT.