OnSIP, the cloud-based PBX startup, has reviewed the native SIP capabilities of Gingerbread (Android 2.3).
Within the fine print of Google’s Gingerbread announcement last month was a reference to Internet calling using an onboard SIP stack. So the crew at onSIP got their mitts on a Nexus S and tried it against their own servers.
You can read the evaluation in their blog post. They note that you can’t enter a SIP address directly on the virtual numeric keypad: you first have to add it to the Nexus’s contacts app. And the Nexus apparently blocks SIP calls that terminate on the PSTN.
It all points to Google’s ambivalent relationship with the carriers. Continue reading