Internet search giant Google needs to add more mobile capabilities to its new Internet-calling service for business customers in order to compete with rivals such as Skype Technologies SA, analyst said.

Jayanth Angl, an analyst at London’s Info-Tech Research Group, said that Google’s new service lacks features that could help it make deep inroads into the market dominated by Skype. Angl said the service is not yet accessible through company’s package of business software. Moreover, users are unable to use the calling feature from mobile phones.

Speaking on the topic, Angl said, “Given the momentum they’ve had with Android and the growth of that operating system, it’s a pretty clear opportunity and I would expect that’s something we’ll see in the future.”

Skype has hit deals with the US mobile-phone carrier Verizon Wireless to install its Web-calling software on phones. With phones such as LG’s enV Touch, people will be able to make calls without using up wireless minutes.

Google on Wednesday rolled out the new service to allow Gmail users to make free long-distance calls from within Gmail to a mobile or landline phones. Making calls to the US and Canada cost nothing; however, other calls costs in the range of 2 cents to $4.99 per minute, depending on the country.