Enterprise Voice & Cloud Phone System
An operated cloud phone system instead of voice chaos: Anexum plans cloud telephony, SIP trunking, Microsoft Teams telephony, number porting, and the migration of existing PBX environments independently of any single carrier, with one owner for migration, operation, and escalation.
From legacy PBX to an operated numbering plan
Inventory
Sites, number ranges, contracts, and dependencies documented before migration
Migration plan
Porting, SIP trunks, and transition windows planned without blind spots
Teams Voice & UC
Microsoft Teams, existing PBX systems, and carrier paths connected cleanly
Operation & escalation
Number management, provider coordination, and ongoing changes handled from one desk
What becomes controllable
Enterprise Voice is not a headset topic. It is operational reliability for reachability.
One numbering plan
Numbers, sites, teams, and users are documented instead of scattered across carrier portals and spreadsheets.
Carrier-independent migration
SIP trunk, cloud telephony, Microsoft Teams Voice, or existing PBX: the architecture follows operations, not a provider’s preferred product.
Porting with ownership
Anexum coordinates carriers, porting windows, and fallback paths so nobody has to search for the responsible party during cutover.
Teams Voice without another island
Teams becomes part of the numbering plan, site logic, and existing voice setup - not a loose collaboration add-on.
Operation after go-live
New users, removed numbers, site changes, and carrier questions do not remain stuck with the internal IT team.
One contact for voice and access
Because Anexum also operates connectivity, voice quality, circuits, and carrier escalation do not split into three separate responsibilities.
- What is Enterprise Voice?
- Enterprise Voice is operated business voice communication on IP technology: SIP trunking, Microsoft Teams Voice, number porting, number management, and unified communications in one controlled architecture.
- How does number porting and number management work?
- Anexum maps existing numbers to sites, teams, and users, plans the port with the involved carriers, and keeps the numbering plan current after go-live.
- How does migrating from ISDN to VoIP and SIP trunking work?
- The migration starts with inventory and risk analysis. Target architecture, carrier path, transition phase, and fallback options are defined before porting and go-live.
- What does a cloud phone system cost?
- Cost depends on the number of users, sites, number ranges, and required features. A per-user monthly price plus a one-time setup for porting and configuration is typical. Anexum calculates carrier-independently and picks SIP trunk, cloud telephony, or Teams telephony to fit your users and sites.
- Cloud phone system or virtual PBX: what is the difference?
- Both terms usually mean the same thing: a phone system operated as a service from a data centre instead of hardware on site. The operation matters more than the label. What counts is who manages numbers, porting, Teams integration, and escalation. That is what Anexum handles.
- How do I set up Microsoft Teams telephony?
- Microsoft Teams telephony needs a voice channel in Teams, usually via Direct Routing with a SIP trunk or via Operator Connect. Anexum integrates Teams into the existing numbering plan, sets up Direct Routing, and connects existing PBX systems so Teams does not sit as an island next to the old telephony.
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