Hybrid host platformX204 host card foundationUse X204 as the host card when one PBX server should carry multiple telephony interface families in a modular configuration.
Modular FXS/FXO, BRI, and Digital Access
Build a flexible PBX server with the OpenVox X204 hybrid host card and matching interface modules. Combine analog endpoints, PSTN outside lines, ISDN BRI circuits, and T1/E1/J1 trunks in one integrated server chassis instead of deploying multiple separate interface devices.
- Interfaces
- FXS / FXO / BRI / Digital
- Expansion
- Host Card + Modules
- Range
- Mixed Interface Builds
Define the hybrid interface mix
Use the X204 host card when one PBX server must combine multiple telephony interface types in the same chassis. Define the required FXS, FXO, BRI, and digital trunk counts first, then select the matching modules.
- Use FXS200M modules for analog phones, fax devices, or station-side wiring.
- Use FXO200M modules for PSTN lines or legacy PBX outside-line ports.
- Use B200M for S/T BRI access and D100M for T1/E1/J1 digital trunk access.
Check host card, modules, and server fit
After the interface mix is defined, confirm the X204 host-card variant, module roles, port and span capacity, server slot, power availability, DAHDI support, and optional echo cancellation.
Hybrid host platformX204 host card foundation
Module role selectionFXS, FXO, BRI, or digitalChoose each module by the interface it must provide, then confirm the selected mix against host-card capacity and PBX server requirements.
PCIe host interfaceModern motherboard defaultUse PCIe for current server boards; choose PCI only for older PCI-only platforms.
Card power connectorPower input confirmationCheck card power input and available server leads before finalizing the configuration.
HWEC hardware echo cancellationHardware DSP echo processingAdd HWEC when the deployment needs dedicated echo handling on the card.
Choose the hybrid module mix
Start with the X204 host card, then select modules according to the interfaces the PBX server must support. B200M adds S/T BRI access, D100M adds T1/E1/J1 trunk access, FXO200M connects outside lines, and FXS200M connects analog endpoints.
Hybrid card component
X204
Hybrid host card for PBX servers that need a modular mix of analog, BRI, and digital interfaces.
- Role
- Hybrid host card
- Interface
- FXO / FXS / BRI / Digital modules
- Function
- Module carrier platform
- Best fit
- Modular PBX server expansion
Hybrid card component
B200M
BRI module for adding S/T-based ISDN BRI access to an X204-based PBX server.
- Role
- BRI module
- Interface
- S/T BRI
- Function
- ISDN BRI access
- Best fit
- BRI line or terminal integration
Hybrid card component
D100M
Digital module for adding one T1, E1, or J1 trunk interface to an X204-based configuration.
- Role
- Digital module
- Interface
- T1 / E1 / J1
- Function
- Digital trunk access
- Best fit
- Single-span trunk integration
Hybrid card component
FXO200M
FXO module for connecting PSTN lines or legacy PBX outside-line ports to the PBX server.
- Role
- FXO module
- Interface
- FXO
- Function
- Outside-line access
- Best fit
- PSTN or PBX trunk ports
Hybrid card component
FXS200M
FXS module for connecting analog phones, fax devices, or station-side wiring to the PBX server.
- Role
- FXS module
- Interface
- FXS
- Function
- Endpoint access
- Best fit
- Analog phones or fax devices
Match interface needs to modules
Compare the host-card role, module function, interface type, and capacity contribution before confirming an X204-based PBX configuration.
| Specification | X204 | B200M | D100M | FXO200M | FXS200M |
|---|---|---|---|---|---|
| Hybrid build basics | |||||
| Use case | Use Hybrid Cards when one PBX server needs a modular combination of analog, S/T BRI, and digital trunk interfaces inside the same chassis. | ||||
| Configuration rule | Start with the X204 host card, then choose modules according to station ports, outside lines, S/T BRI circuits, and T1/E1/J1 trunks. | ||||
| Module-by-module selection | |||||
| Interface | Host for modules | S/T BRI | T1 / E1 / J1 | FXO | FXS |
| Function | Module carrier platform | ISDN circuit access | Digital trunk access | Outside-line access | Endpoint access |
| Best fit | Modular PBX server expansion | BRI line or terminal integration | Single-span trunk integration | PSTN or PBX trunk ports | Analog phones or fax devices |
| Interface capacity | Hosts selected modules | 2 BRI lines / 4 calls | 1 digital span | 2 FXO lines | 2 FXS lines |
| Configuration confirmation | |||||
| Module compatibility | Confirm the X204 host-card variant, selected module mix, call capacity, and interface wiring for the final bill of materials. | ||||
| Server platform | Confirm the host slot, card revision, operating system, DAHDI support, and available power for the target PBX server. | ||||
| Quotation details | Share the required FXS, FXO, BRI, and digital trunk counts, module mix, server details, and preferred X204 variant for quotation confirmation. | ||||
Use Hybrid Cards for mixed interfaces
Hybrid Cards are designed for PBX servers that need several interface families in one modular card system. If the project is purely analog, purely S/T BRI, purely T1/E1/J1 digital, or better served by a standalone gateway, choose the matching OpenVox product family.
Mixed-interface chassis deployment
- The PBX host needs more than one telephony interface family in one chassis.
- The team wants modular control over analog, BRI, and digital access.
- The build keeps all interfaces inside the same server platform.
Dedicated analog card alternative
- The project is purely FXS or FXO and does not need mixed modules.
- A single analog card is simpler than a modular chassis.
- Endpoint-only adaptation can stay in the analog card family.
Dedicated BRI card alternative
- The access side is only S/T BRI and does not need other module types.
- A BRI-only build is better served by the BRI card family.
- The project does not need module-level mixing.
Dedicated digital card alternative
- The build is only T1, E1, or J1 trunk access.
- A digital-only chassis is simpler than a hybrid module plan.
- The project does not need analog or BRI modules.
Get a Hybrid Card Configuration Quote
Send the required FXS, FXO, BRI, and digital trunk counts, preferred module mix, server slot, operating system, Asterisk version, and DAHDI version. OpenVox can confirm the X204-based configuration and prepare a quotation for the PBX build.