iPhone News - How to use Whistlephone as a Sip Client for your iPhone news - Wed Jul 21, 2010 6:53 pm Post subject: How to use Whistlephone as a Sip Client for your iPhone
From this page "You can use Whistle phone as a limited feature SIP client. It does not have advanced options such as wideband, STUN support, multiple SIP accounts, display name, etc. However, you can rely on it for your basic needs of a SIP client."