With Multi-Device Calling, the same DrayTEL account is logged in at multiple locations. Each phone makes and receives calls on the same account and share the same calling credit. All phones will ring on an incoming call.
With Group Calling, you can include up to two other DrayTEL accounts to receive incoming calls to the same allocated PSTN phone number at the same time. All phones ring but each location/person still has their own DrayTEL account.
Please note each DrayTEL SIP ID can make/receive up to 2 calls simultaneously. To increase the number of calls that can be made simultaneously please view our SIP Trunking services.