Bridge the telephony that remains to the IP future.
Connect compatible analogue, cellular and ISDN interfaces into a modern voice design—without treating the gateway as a substitute for migration planning.
Choose around the connection that must remain.
Yeastar’s current gateway portfolio covers distinct interface families. Exact models, ports, codecs, carrier requirements and regional availability must be validated against the live environment.
Analogue VoIP gateways
Connect supported analogue phones, fax machines, PSTN lines or traditional PBX interfaces to an IP telephony design.
Cellular VoIP gateways
Bridge supported GSM, 3G or 4G cellular channels with VoIP for qualified use cases.
E1/T1/PRI gateways
Bring supported E1, T1 or PRI connections into a compatible IP phone-system environment.
BRI gateways
Integrate supported ISDN BRI lines with VoIP systems or connect an IP PBX to an existing BRI service.
A gateway solves an interface problem—not the whole transition.
Before selecting hardware, identify why the legacy connection remains, how long it must remain, what calls or devices depend on it and who owns support when something fails.
- Existing line and carrier details
- Numbers and inbound routing
- Analogue or ISDN devices
- Fax and special-service requirements
- Power and network dependencies
- Cutover and rollback ownership
Use the gateway deliberately.
It may provide a transition path, preserve a justified interface or support a staged migration. It should not become an undocumented permanent dependency.
Get the design inputs in the right order.
Identify the physical interface
Record ports, services, devices, cabling and the current provider arrangement.
Confirm the business dependency
Understand the calls, alarms, fax, paging or site workflow that relies on it.
Validate compatibility
Check the exact gateway model, PBX, carrier, protocols, codecs and regional availability.
Test acceptance and fallback
Agree what must work, who signs it off and how the team responds if cutover fails.
Turn a legacy dependency into a controlled design.
Bring TeraFi the interface, carrier, device and migration context. We will help identify the current Yeastar gateway pathway before you quote.
Fact-checked on 11 August 2026 against Yeastar’s current VoIP gateway portfolio. Feature support varies by family and model.