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Features	PortGo	PortGo Professional	PortGo (Windows Mobile)	PortGo Professional (Windows Mobile)
PortSIP's PortGo is the market's leading SIP based softphone available for download. Compare PortGo with PortGo Pro version:	Free	USD29.90	Free	USD29.90
Basic Calling Make voice and video calls to any number.
5 parties Conferencing Engage in a voice or video call with two participants at once.	Maximum 3rd conferencing		Maximum 3rd conferencing	Maximum 3rd conferencing
Multiple Lines Benefit from 5 incoming/outgoing lines.	Maximum 2 lines		Maximum 2 lines	Maximum 2 lines
QoS Configure your softphone to support QoS
Security and Encryption Keep your call information private and safe from hacking with TLS/SRTP.
Audio Codec G.729 Maximize your bandwidth for superior connection.
Audio Codec G722.1, AMR-WB Wide-band audio codec to support HD audio.
Video Codec H.264 H.264 codec for video call.
Branding Get customized softphone skins (min. purchase 200 licenses -contact Sales for more info).
No Advertising Window Benefit from the option to hide the ad window.
Support Get support from a PortSIP support team by email or via the SKYPE, MSN.
High Definition Video View, send and receive video in high-resolution HD (1280x720p) video with H.264 codec.
Presence Alert Select a contact or group of contacts and be notified when their phone and presence status changes.
Multiple Languages Support from English, French, Spanish, Russian and Italian. (Windows only)