The deal provides MOKO.mobi access to Telstra's 11.5 million mobile customers, and includes integrated links from Telstra's mobile portal to the platform as well as subscription and premium billing.
MOKO.mobi said it expected to begin collecting revenue from the arrangement in the June quarter of 2011.
This is the fifth deal MOKO.mobi has signed in Australia, and its mobile social networking platform is now available to around 90% of the local mobile subscriber base.
The company earlier this month also closed the acquisition of mobile video social network EyeVibe in a move aimed at growing its UK presence.
MKB shares fell 3.33% on Monday to $0.087.