Free Spark client features

[parzee_forums]

Im using the Spark client free version, can I place PSTN calls? Looks like I can only call other Spark clients / SIP URIs, also no Voicemail

How can I call FreeSpark from other external systems? I have an EX90 but dunno what is my Free Spark SIP URI?

[Manish Gogna]

Hi,

As per the Spark product & support page

https://www.ciscospark.com/pricing/new-offer.html

FAQs

What do I get with a paid plan versus a free plan?

 With a Cisco Spark Free account, you get unlimited team messaging and screen sharing.

Your video calls are limited to 3 people.

Paid accounts allow video calls with up to 3 people. You’ll also get tools for business like room moderation, Single Sign On, an admin portal, and metrics and analytics. You’ll get live support. And you’ll be able to use unlimited app integrations, and hybrid services with Exchange, Outlook, and Directory.

How does the free trial work?

No credit card is required for the free trial. Your trial will be canceled after 30 days if you don’t choose to pay for a Cisco Spark plan or revert to a Cisco Spark Free account.

• For a period of 30 days, you’ll get Cisco Spark Plus.
• Screen share and hold unlimited video calls with up to 3 people.
• Get unlimited app integrations.
• Try out features like room moderation.
• Get live support

It doesn't mention any restriction with the free account withing 30 days. 

HTH

Manish