Analog endpoint access
OpenVox FXS gateways and modules connect supported analog endpoints to SIP.
Proof chips
- FXS
Move traditional voice to VoIP in phases.
Choose the right migration path for analog devices, traditional lines, digital trunks and PBXs without forcing every change into one cutover.
The migration starting point
Different systems need 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 change according to operational risk and business priority.
Analog devices
Phones or fax machines must stay
Start with FXS access and endpoint validation.
Legacy PBXThe PBX remains during migration
Start with analog, digital or SIP coexistence.
ISDN / PSTNCarrier trunks are changing
Start with switch-off readiness and trunk replacement.
POTS serviceA single analog service must continue
Start with device-by-device POTS replacement.
Classify first, then migrate by interface.
Each phase has its own scope, acceptance criteria and rollback decision instead of relying on a single all-at-once migration.
Inventory
Record devices, PBXs, trunks, numbers, sites and dependencies.
Classify paths
Separate FXS, FXO, digital and SIP interworking requirements.
Prioritize phases
Sequence work by carrier trigger, business value and operational risk.
Test and transition
Validate each path before retiring the corresponding traditional service.
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.
iAG800
Flexible 2/4/8-port FXS/FXO gateway for connecting analog endpoints and PSTN lines to SIP networks.
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DGW-L302
Dual-span E1/T1/PRI VoIP gateway for connecting two digital trunks to SIP networks with up to 60 concurrent calls.
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UCP1202
Unified Communication Platform (UCP) is the ideal solution to integrate data, voice and video in one product for small and medium-sized enterprises, which can be used in scenarios such as government and enterprise call systems, commercial call centers, and dispatch center industries.
View productDocumented roles for legacy interfaces.
This page is a migration overview; detailed compatibility and capacity remain interface-specific assessments.
Analog line and PBX access
OpenVox FXO products connect analog PSTN and PBX interfaces to SIP.
Proof chips
- FXO
E1/T1/J1 interworking
Digital gateways and DTU modules support documented trunk and signaling options.
Proof chips
- DIGITAL
Target network connection
UCP supports standard SIP trunks for IP-PBX, softswitch and IMS environments.
Proof chips
- SIP
Build a phased VoIP migration roadmap.
Share devices, lines, trunks, PBXs, sites, carrier changes and target systems. OpenVox can help identify the migration paths and validation sequence.