Discuss.io can use up to 2 Mbps download per participant, although 1 dedicated Mbps is good enough for most situations. The more people in a call, the higher the download bandwidth that the platform will require in order to function properly. The same applies for several people joining to a call while sharing their connection (this will require a higher upload speed).
Discuss.io uses between 250 MB/hour and 500 MB/hour, both up and down, so it could use as much as 1 GB/hour. Please have this in mind when using metered connections like mobile wifi over 3G/4G/LTE.
Please note: if you are using a DSL modem with a slow uplink, a 3G/4G (mobile) wireless modem, a network with some types of proxies/firewalls, or a lower speed connection, your session experience and quality may suffer.