private number plan

private number plan

The capability within an enterprise to use 5-digit dialing to all of its telephone extensions.
References in periodicals archive ?
Alcatel-Lucent said that its solution will enable Sonofon to improve customer satisfaction for Enterprise customers with enterprise services including Convergent Private Number Plan, Call screening, and OfficeZone.
Site-to-site VoIP VPN - Allows SMEs to establish a private virtual private VoIP network between headquarters and branch office locations by leveraging the public Internet and enables private number plans, extension dialing and free On-net VoIP calls