Analog telephone service
Retain a validated analog phone while the external network moves to SIP.
Keep critical analog services running as POTS lines retire.
Replace the retiring line, not every validated endpoint. Move phones, fax, emergency and facility services onto SIP while retaining useful on-site copper infrastructure.
The analog dependency
Replace the line without disrupting the service.
A retiring POTS connection may still support a phone, fax machine or another analog device with a specific calling behavior.
The project must identify each dependency, determine whether the device can move through FXS access and validate the SIP service before the original line is removed.
Analog fax requirement
Confirm fax behavior, codec, signaling and provider fit before migration.
Replace one local line group
Map devices and numbers at a single office or service location.
Coordinate several locations
Sequence line retirement and gateway deployment according to each site schedule.
Move from external deadline to accepted replacement.
Specific operator retirement dates must be confirmed from an authoritative source for the country and service involved.
Confirm the line change
Verify provider, location, service and retirement timeline.
Inventory devices
Record phone, fax, number, cabling and call behavior.
Test the SIP path
Validate registration, calls, fax and failure conditions.
Retire the POTS line
Remove the old service only after the replacement behavior is accepted.
Match gateway capacity to the device estate.
OpenVox FXS products cover small endpoint groups through high-density requirements; model selection follows device type, quantity and placement.
Primary product
iAG802
Small validated FXS estate reference
View product
Optional when needed
MAG1000
16, 24 or 32-port validated FXS tier
Use when: Use only after validating device compatibility and the required port count.
View product
Optional when needed
MAG2000
48, 72 or 96-port validated FXS tier
Use when: Use only after validating device compatibility and the required port count.
View product
Optional when needed
MAG2100
48, 72 or 96-port high-density FXS tier
Use when: Use only after validating device compatibility, port count, and the required RJ45 or RJ21 cabling interface.
View productKeep claims at the device and service level.
No alarm, access-control or regulated critical-device compatibility is claimed without specific evidence.
Analog phone and endpoint access
OpenVox FXS gateways connect analog phones and supported analog endpoints to SIP.
Proof chips
- FXS
Fax included in UCP deployment guidance
OpenVox UCP documentation includes fax machines in analog endpoint scenarios.
Proof chips
- FAX
Multiple service environments
OpenVox platforms and gateways support SIP interworking with documented IP voice systems.
Proof chips
- SIP
Compatibility confirmed per device
Signaling, codec, call and fax behavior are validated before the old line is removed.
Proof chips
- PROJECT FIT
Build a verified POTS replacement plan.
Share provider timelines, device types, numbers, cabling, fax requirements and the target SIP service. OpenVox can help map FXS capacity and validation steps.