You can have an unlimited number of DDI numbers, allowing customers and business contacts to dial directly through to staff members, without passing through a switchboard.
How many telephone numbers can I have with ISDN30 & 30e?
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What is ISDN30/30e?
What is ISDN30/30e?
Using ISDN30/30e
Find out more information on ISDN30/30e and the features it has including alternative and diverse routing, customer and admin controlled call forwarding and diversion, maintenance and resilience options and Business Continuity.
How long does it take to install a new ISDN30 service?
How long does it take to install a new ISDN30 service?