Phones or fax machines must remain
Start with FXS access and endpoint validation.
Move traditional voice to VoIP in phases.
Modernize traditional voice services in manageable steps. Identify whether devices, the PBX, or carrier access is driving the change, then follow the migration path suited to each dependency.
Starting point for migration
Different systems require different migration paths.
An estate may combine analog phones, fax machines, PSTN lines, E1/T1 trunks, and a traditional PBX.
A useful migration plan inventories these dependencies, separates the required interface paths, and sequences changes according to operational risk and business priority.
- Analog devices
- Legacy PBX
- ISDN / PSTN
- POTS service
The PBX remains during migration
Start with analog, digital, or SIP coexistence.
Carrier trunks are changing
Start with switch-off preparation and trunk replacement.
A single analog service must continue
Start with device-by-device POTS replacement.
Classify first, then migrate by interface
Use iAG800 V2 for the analog transition path and DGW-L302 for the digital trunk path, then continue with the narrower workflow that matches the retained estate.
Use the OpenVox layer that matches each interface.
The final architecture may combine several product families as the estate moves from traditional voice to SIP.
Documented roles for legacy interfaces.
This page is a migration overview; detailed compatibility and capacity remain interface-specific assessments.
Analog endpoint access
OpenVox FXS gateways and modules connect supported analog endpoints to SIP.
Analog line and PBX access
OpenVox FXO products connect PSTN and analog PBX interfaces to SIP.
E1/T1/J1 interoperability
DGW-L302 supports the documented two-span E1/T1/J1 trunk and signaling options.
Target network connection
UCP supports standard SIP trunks for IP-PBX, softswitch, and IMS environments.
Move traditional voice services to a future-ready VoIP architecture.
Share the devices, lines, trunks, PBX, sites, carrier requirements, and target systems. OpenVox can define the appropriate gateway roles and validation sequence.
Related products
OpenVox iAG800 V2 Series Analog VoIP Gateway
Supports 2/4/8 FXO/FXS combo ports; Uses standard SIP protocol; Compatible with leading IMS/NGN platforms, IPPBX, and SIP servers.
OpenVox DGW-L302 Series E1/T1/PRI VoIP Gateway
Supports 2 software-selectable T1/E1/PRI interfaces; supports 60 concurrent calls.
Let’s discuss your project
Describe your requirements. Our team can help you select and plan your OpenVox solution.