ADTRAN VoIP Gateways

Shop ADTRAN VoIP gateways for SIP trunking, analog voice migration, hosted PBX, PRI delivery, FXS connectivity, FXO lifeline, carrier Ethernet, and converged voice and data networking. Hummingbird Networks offers ADTRAN Total Access VoIP gateways for businesses, service providers, branch offices, and organizations transitioning from traditional analog or TDM voice infrastructure to IP-based communications.

ADTRAN VoIP gateways can combine voice gateway functionality with IP routing, firewall, VPN, Quality of Service, Voice Quality Monitoring, SIP interoperability, analog FXS ports, FXO connectivity, T1 interfaces, and optional Enterprise Session Border Controller functionality. Current and installed-base Total Access platforms include the Total Access 900 Series and Total Access 900e Series, with models such as the 908, 908e, 916, 916e, 924, and 924e.

Choosing the right ADTRAN VoIP gateway depends on the number of analog devices, FXS port requirements, FXO requirements, T1 or PRI connectivity, SIP provider, hosted PBX architecture, SBC call capacity, Ethernet interfaces, survivability requirements, firewall and VPN needs, and the existing communications environment.

ADTRAN VoIP Gateways

ADTRAN VoIP gateways are designed to connect IP-based voice services with traditional telephony equipment and business networks.

Depending on the model, an ADTRAN gateway can support:

• SIP trunking
• Hosted PBX
• IP Centrex
• Analog phones
• Fax machines
• Modems
• Legacy PBX systems
• PRI delivery
• T1 voice services
• Enterprise Session Border Controller functionality
• Voice Quality Monitoring
• Firewall and VPN

ADTRAN Total Access VoIP Gateways

The ADTRAN Total Access family is widely used for converged voice and data applications.

Total Access VoIP gateway families include:

• ADTRAN Total Access 900 Series
• ADTRAN Total Access 900e Series

These gateways are designed to bridge IP voice services with analog and digital telephony interfaces while also providing business-class routing and security.

ADTRAN Total Access 900 Series

The Total Access 900 Series is designed for Ethernet or T1-based VoIP applications.

Common Total Access 900 Series models include:

• ADTRAN Total Access 904
• ADTRAN Total Access 908
• ADTRAN Total Access 912
• ADTRAN Total Access 916
• ADTRAN Total Access 924

Different models provide different numbers of analog FXS ports so organizations can match the gateway to their required analog voice density.

ADTRAN Total Access 900e Series

The ADTRAN Total Access 900e Series is designed for Ethernet and multi-T1 converged voice and data applications.

Current 900e models include:

• ADTRAN Total Access 908e
• ADTRAN Total Access 916e
• ADTRAN Total Access 924e

These gateways combine analog voice, T1, Ethernet, IP routing, firewall, VPN, QoS, and optional SBC functionality in one business communications platform.

ADTRAN Total Access 908

The Total Access 908 is an 8-port analog voice gateway designed for business VoIP and converged-network applications.

It can provide an appropriate fit for smaller offices and sites that need a limited number of analog FXS interfaces while transitioning toward IP-based voice services.

ADTRAN Total Access 908e

The ADTRAN Total Access 908e is a third-generation IP business gateway designed for Ethernet and multi-T1 VoIP deployments.

Current specifications include:

• 8 FXS analog voice ports
• 4 T1/FT1 interfaces
• 1 Gigabit Ethernet interface
• 2 Fast Ethernet interfaces
• IP routing
• Stateful inspection firewall
• VPN functionality
• Quality of Service
• Voice Quality Monitoring
• Optional SBC functionality

ADTRAN 908e with Lifeline FXO

Selected Total Access 908e configurations include a lifeline FXO port.

A lifeline FXO interface can provide alternate access to the public switched telephone network for supported survivability and emergency-use scenarios.

ADTRAN 908e with SBC

Hummingbird Networks currently carries Total Access 908e configurations with integrated SBC licensing for different simultaneous-call capacities.

Available configurations include models designed for:

• 5 SBC calls
• 25 SBC calls
• 50 SBC calls
• 100 SBC calls

SBC-capable gateway configurations are especially useful for SIP trunking, hosted PBX, and unified communications environments.

ADTRAN Total Access 916

The Total Access 916 increases analog voice density by providing 16 FXS ports for compatible telephony devices.

This can be useful for organizations supporting more analog phones, fax machines, or other traditional voice equipment.

ADTRAN Total Access 916e

The Total Access 916e provides 16 FXS analog ports along with multi-T1 and Ethernet connectivity.

Current ADTRAN specifications include:

• 16 FXS ports
• 4 T1/FT1 interfaces
• 1 Gigabit Ethernet interface
• 2 Fast Ethernet interfaces
• IP routing
• Firewall
• VPN
• QoS
• Optional SBC functionality

ADTRAN 916e with Lifeline FXO

Selected Total Access 916e configurations add a lifeline FXO interface for supported PSTN survivability applications.

ADTRAN Total Access 924

The Total Access 924 is a higher-density analog voice gateway designed for organizations requiring up to 24 FXS interfaces.

This can support larger installations containing many analog endpoints.

ADTRAN Total Access 924e

The Total Access 924e provides the highest analog FXS density in the current Total Access 900e family.

Available configurations include:

• 24 FXS ports
• 24 FXS ports plus lifeline FXO on selected models
• 16 FXS ports plus 9 FXO ports on selected models
• 4 T1/FT1 interfaces
• 3 Ethernet interfaces
• Routing, firewall, and VPN
• Optional SBC functionality

ADTRAN 924e with FXO

Selected Total Access 924e configurations provide multiple FXO interfaces in addition to FXS ports.

This can be useful when a deployment requires both analog station connectivity and connections toward traditional PSTN or analog trunk services.

ADTRAN SIP Gateways

SIP gateways connect SIP-based voice services with existing telephony systems and endpoints.

ADTRAN Total Access gateways can be used for:

• SIP trunks
• Hosted PBX services
• Cloud voice
• IP Centrex
• Analog phone migration
• Fax support
• Legacy PBX integration

ADTRAN Analog-to-SIP Gateways

One of the primary functions of an ADTRAN VoIP gateway is converting between IP-based signaling and traditional analog voice interfaces.

This allows organizations to retain analog devices while moving the wider communications network toward SIP and VoIP.

ADTRAN SIP-to-Analog Conversion

Total Access gateways can convert SIP or MGCP-based voice services into traditional analog FXS interfaces.

This can help support:

• Analog telephones
• Fax machines
• Modems
• Alarm devices
• Other compatible analog endpoints

ADTRAN FXS Gateways

FXS ports provide analog station interfaces for phones and other traditional telephony devices.

ADTRAN Total Access gateways are available with different FXS densities.

Common configurations include:

• 4 FXS ports
• 8 FXS ports
• 12 FXS ports
• 16 FXS ports
• 24 FXS ports

What Is an FXS Port?

An FXS port provides the analog line interface normally supplied by a telephone company or PBX to an analog device.

Compatible devices can include:

• Analog phones
• Fax machines
• Modems
• Door phones
• Alarm equipment
• Other analog telephony devices

ADTRAN FXO Gateways

FXO interfaces connect a gateway or communications system to an analog telephone line or similar external analog voice service.

Selected Total Access 900e configurations include lifeline or multiple FXO ports.

What Is an FXO Port?

An FXO interface receives analog telephone service from an FXS source such as the public switched telephone network.

FXO can be useful for:

• Lifeline calling
• PSTN backup
• Analog trunking
• Legacy telephony integration

FXS vs. FXO

FXS and FXO serve opposite sides of an analog telephone connection.

FXS: Provides analog service to a telephone or compatible endpoint.

FXO: Receives analog service from a telephone line or other FXS source.

Understanding the distinction is essential when selecting a VoIP gateway.

ADTRAN T1 VoIP Gateways

Total Access gateways support T1 interfaces for compatible voice and data services.

The current Total Access 900e family provides four T1/FT1 interfaces.

T1 connectivity can support:

• PRI
• T1 CAS
• Traditional PBX integration
• Legacy carrier services
• Voice trunking

ADTRAN PRI Gateways

Primary Rate Interface, or PRI, is a digital voice service traditionally delivered over T1 circuits in North America.

ADTRAN Total Access gateways can bridge PRI-based PBX systems with SIP and VoIP networks in compatible deployments.

ADTRAN SIP-to-PRI Gateways

A SIP-to-PRI gateway allows a business to connect a traditional PRI-based PBX to a modern SIP trunk or IP voice service.

This can allow organizations to migrate carrier services without immediately replacing the existing PBX.

ADTRAN PRI-to-SIP Gateways

Total Access gateways can also support the reverse integration by connecting supported digital voice systems to SIP-based network services.

This interoperability can extend the useful life of established communications infrastructure.

ADTRAN Hosted PBX Gateways

Hosted PBX services move call-control functionality into the provider or cloud environment.

An ADTRAN VoIP gateway can provide local analog connectivity for devices that cannot connect directly to the hosted IP platform.

ADTRAN Gateways for Analog Phones

Organizations moving to hosted or SIP-based voice services may still need to support analog telephones.

FXS-equipped Total Access gateways allow these devices to continue operating through the new IP voice infrastructure.

ADTRAN Gateways for Fax Machines

Fax machines often remain in use after the wider voice network moves to VoIP.

Total Access FXS ports can provide analog connectivity for compatible fax devices.

Fax performance can depend on the VoIP carrier, codec, signaling, network quality, and gateway configuration.

ADTRAN Gateways for Modems

Some businesses continue to use analog modems for specialized equipment or legacy applications.

Total Access gateways can provide analog ports for compatible modem applications when supported by the voice service.

ADTRAN Gateways for Legacy PBX Systems

A Total Access gateway can allow an existing PBX to remain in operation while the carrier-side service transitions to IP.

This can reduce the need for an immediate full replacement of:

• PBX hardware
• Phones
• Internal cabling
• Legacy analog devices

ADTRAN Gateways for SIP Trunking

SIP trunking delivers voice services over IP rather than traditional dedicated voice circuits.

ADTRAN gateways can provide the interoperability needed between a SIP service provider and existing business telephony equipment.

ADTRAN Enterprise Session Border Controller

Enterprise Session Border Controller functionality can be added to compatible Total Access gateways.

An eSBC helps normalize, secure, and troubleshoot SIP communications between the service provider and customer voice environment.

ADTRAN SBC Gateways

Total Access 900e gateways can support SBC functionality for up to 100 simultaneous calls on compatible configurations.

SBC can help with:

• SIP interoperability
• Voice security
• NAT traversal
• Call routing
• Remote survivability
• Voice troubleshooting

ADTRAN SBC Call Capacity

SBC requirements should be based on expected simultaneous call volume rather than total number of phones.

Hummingbird Networks currently carries selected ADTRAN gateway configurations supporting different licensed SBC capacities.

Examples include:

• 5 simultaneous calls
• 25 simultaneous calls
• 50 simultaneous calls
• 100 simultaneous calls

ADTRAN Remote Survivability

Total Access 900e gateways can provide voice survivability features that help maintain local calling functions during certain WAN or service interruptions.

Supported functions can include:

• Local SIP registration
• Back-to-Back User Agent operation
• SIP proxy functionality
• NAT traversal
• FXO lifeline calling on compatible models

ADTRAN Lifeline FXO

A lifeline FXO port can provide a backup analog PSTN path for supported gateway configurations.

This can be valuable where organizations require alternate outbound calling capability during a WAN or SIP service interruption.

ADTRAN VoIP Gateway Routing

Total Access VoIP gateways include business-class IP routing in addition to voice functionality.

Routing capabilities can include:

• Static routing
• Dynamic routing
• NAT
• DHCP
• VLANs
• WAN and LAN Ethernet interfaces

ADTRAN VoIP Gateway Firewall

Total Access gateways include stateful inspection firewall functionality.

This allows a gateway to provide both voice interoperability and integrated network security.

ADTRAN VoIP Gateway VPN

Compatible Total Access platforms include VPN capabilities for secure network connectivity.

This can be useful in branch and distributed business environments where voice and data services share the same network infrastructure.

ADTRAN VoIP Gateway QoS

Quality of Service is essential for voice traffic because VoIP is sensitive to delay, jitter, congestion, and packet loss.

Total Access gateways include QoS methods designed to prioritize voice traffic over less time-sensitive network applications.

ADTRAN Voice Quality Monitoring

Voice Quality Monitoring, or VQM, helps administrators troubleshoot VoIP performance.

Compatible Total Access gateways can monitor:

• Mean Opinion Score
• Jitter
• Delay
• Packet loss

ADTRAN MOS Monitoring

Mean Opinion Score provides an estimated indication of perceived voice quality.

MOS monitoring can help identify network conditions that may be degrading call quality.

ADTRAN VoIP Gateway Ethernet Interfaces

The Total Access 900e Series includes three Ethernet interfaces:

• 1 Gigabit Ethernet interface
• 2 Fast Ethernet interfaces

These interfaces can be configured for WAN or LAN-facing applications depending on the network design.

ADTRAN VoIP Gateway VLAN Support

Total Access gateways support IEEE 802.1Q VLAN trunking.

VLANs can help separate:

• Voice
• Business data
• Management traffic
• Guest access
• Other network segments

ADTRAN VoIP Gateway NAT

Network Address Translation allows internal private addresses to communicate through external network connections.

NAT is especially relevant in SIP environments because voice signaling and media can be affected by address translation.

ADTRAN SIP NAT Traversal

Total Access gateway and SBC functionality can help manage SIP communications through NAT boundaries.

This can improve interoperability between internal voice systems and external SIP providers.

ADTRAN VoIP Gateway Dynamic Bandwidth Allocation

Dynamic bandwidth allocation can help optimize the use of available bandwidth between voice and data applications.

This is useful in converged environments where traffic levels change throughout the day.

ADTRAN VoIP Gateway Codecs

Voice codecs determine how audio is encoded for transmission across an IP network.

Codec support varies by gateway model and software release.

Gateway design should consider:

• Carrier codec requirements
• PBX compatibility
• Bandwidth
• Voice quality
• Transcoding requirements

ADTRAN Transcoding

Selected Total Access 900e platforms support voice transcoding between compatible codecs.

Transcoding can be useful when the service provider and customer equipment do not use the same voice codec.

ADTRAN DTMF Interworking

DTMF interworking helps ensure that keypad tones and signaling are properly translated across different voice-network technologies.

This can be important for:

• Voicemail
• Auto attendants
• IVR systems
• Conference systems
• Other touch-tone applications

ADTRAN SIP and MGCP Gateways

Total Access gateways support SIP or MGCP-based VoIP applications depending on the model and configuration.

This provides interoperability with compatible:

• Softswitches
• Call agents
• Feature servers
• Hosted PBX platforms
• Carrier voice networks

ADTRAN VoIP Gateways for Small Business

Smaller businesses can use a gateway such as the Total Access 908 or 908e when they need to preserve a limited number of analog devices while adopting SIP or hosted voice.

ADTRAN VoIP Gateways for Mid-Sized Businesses

Businesses requiring additional analog ports can use higher-density models such as the 916e or 924e.

ADTRAN VoIP Gateways for Enterprise Networks

Enterprise organizations can use Total Access gateways at branch or remote locations where traditional voice devices must integrate with centralized IP communications services.

ADTRAN VoIP Gateways for Service Providers

ADTRAN designed the Total Access family for carrier and service-provider VoIP deployments as well as enterprise use.

Service-provider applications can include:

• SIP trunking
• Hosted PBX
• Managed voice services
• PRI replacement
• Analog line migration
• Customer-premises equipment

ADTRAN Carrier Ethernet Voice Gateways

Total Access 900e gateways are designed for carrier Ethernet and multi-T1 environments.

This allows voice and data services to converge onto a common IP-based network infrastructure.

ADTRAN VoIP Gateways for Hosted PBX Providers

Hosted PBX providers can deploy Total Access gateways at customer locations where analog phones, fax machines, PBX systems, or other traditional interfaces still need to be supported.

ADTRAN VoIP Gateways for Unified Communications

Unified communications environments can use ADTRAN gateways to bridge older telephony systems into modern SIP-based communications platforms.

ADTRAN VoIP Gateway Management

Total Access gateways run ADTRAN Operating System, commonly known as AOS.

Management options can include:

• Command-line interface
• Web-based management
• Remote administration
• Centralized ADTRAN management tools
• Configuration backup and restoration

ADTRAN AOS VoIP Gateways

AOS provides routing, security, voice, QoS, management, and diagnostic functionality across compatible Total Access platforms.

ADTRAN n-Command Management

Compatible Total Access gateways can be managed through ADTRAN n-Command infrastructure.

Centralized management can provide capabilities such as:

• Device discovery
• Mass configuration
• Firmware upgrades
• Configuration backup
• Configuration restoration
• Inventory reporting
• Voice Quality Monitoring

ADTRAN VoIP Gateway Form Factors

Total Access gateways can support multiple physical installation methods depending on the model.

Common installation options include:

• Rack mounting
• Wall mounting
• Desktop installation

ADTRAN Rackmount VoIP Gateways

Rack-mounted gateways can be installed alongside routers, switches, patch panels, PBX equipment, and other network infrastructure.

ADTRAN Wall-Mount VoIP Gateways

Wall mounting can be useful in telecommunications rooms and smaller equipment environments where rack space is limited.

ADTRAN VoIP Gateway Battery Backup

Selected Total Access 900e gateways support compatible battery backup systems.

Battery backup can help maintain voice services during certain power outages.

ADTRAN VoIP Gateways and UPS Systems

A gateway can also be connected to appropriately sized UPS infrastructure to provide temporary backup power.

This is particularly important when the gateway supports:

• Business telephone service
• Emergency communications
• SIP trunks
• Analog voice devices
• Critical branch-office connectivity

ADTRAN VoIP Gateways and Network Switches

A Total Access gateway can connect to Ethernet switches that provide access for phones, computers, wireless access points, and other devices.

A typical converged network can include:

Carrier Network → ADTRAN VoIP Gateway → Ethernet Switch → IP Phones, Computers & Other Network Devices

ADTRAN VoIP Gateways and PoE Switches

Total Access gateways do not need to provide PoE directly to every endpoint.

They can be paired with a compatible PoE switch that powers:

• IP phones
• Wireless access points
• Other PoE devices

ADTRAN VoIP Gateways and Analog Devices

The major advantage of a VoIP gateway is the ability to connect analog endpoints into an IP-based communications environment.

This can allow a business to migrate its network incrementally instead of replacing every device at once.

Replacing an ADTRAN VoIP Gateway

Before replacing an existing ADTRAN gateway, document:

• Total Access model
• ADTRAN part number
• Number of FXS ports
• Number of FXO ports
• T1 interfaces
• PRI requirements
• SIP provider
• PBX configuration
• SBC licensing
• Ethernet interfaces
• Firewall configuration
• VPN requirements
• AOS software

Replacing a Total Access 908

When replacing a Total Access 908, verify whether the deployment requires eight FXS ports, T1 or PRI connectivity, SIP conversion, routing, and other existing voice functions.

Replacing a Total Access 908e

A Total Access 908e replacement should match the required analog voice density, T1 connectivity, Ethernet configuration, SBC licensing, and lifeline FXO requirements.

Replacing a Total Access 916 or 916e

Organizations using a 16-port Total Access gateway should verify whether all FXS ports are still required and whether the deployment uses lifeline FXO, PRI, T1, or SBC features.

Replacing a Total Access 924 or 924e

A 924-family replacement requires careful review because configurations can include 24 FXS ports or combinations of FXS and FXO interfaces.

Upgrading an Older ADTRAN VoIP Gateway

An upgrade may be appropriate when:

• Voice services are migrating to SIP
• Existing hardware is aging
• More analog ports are required
• SBC functionality is needed
• Higher Ethernet performance is required
• Existing carrier services are changing
• Support availability has changed

Total Access 900 vs. 900e

The Total Access 900 and 900e families serve similar converged voice and data roles but differ in generation, Ethernet capabilities, T1 density, software, and available features.

Total Access 900: Established VoIP gateway family with analog FXS, T1, routing, and SIP/MGCP functionality.

Total Access 900e: Newer-generation IP business gateway family with four T1 interfaces, Gigabit Ethernet, enhanced routing and security, and optional SBC functionality.

Total Access 908e vs. 916e

The primary analog voice-density difference is the number of FXS ports.

908e: 8 FXS ports.

916e: 16 FXS ports.

Both provide multi-T1 connectivity, Ethernet routing, firewall, VPN, and optional SBC capabilities.

Total Access 916e vs. 924e

The 924e provides greater analog port density than the 916e.

916e: 16 FXS ports.

924e: Up to 24 FXS ports or specialized FXS/FXO configurations.

How to Choose an ADTRAN VoIP Gateway

Count Analog Devices

Determine how many analog phones, fax machines, modems, and other devices need FXS connectivity.

Determine FXO Requirements

Identify whether PSTN lifeline or analog trunk connectivity is required.

Check T1 and PRI Requirements

Document existing PBX and carrier interfaces.

Identify the SIP Provider

Confirm interoperability requirements with the SIP trunk or hosted voice platform.

Determine SBC Requirements

Calculate the expected number of simultaneous calls and choose the appropriate eSBC licensing.

Check Ethernet Requirements

Verify WAN and LAN interface speed and port requirements.

Check Routing and Security

Determine whether the gateway will also provide routing, firewall, VPN, NAT, and DHCP functions.

Plan Voice Survivability

Determine whether local survivability or FXO lifeline functionality is required.

ADTRAN VoIP Gateway Selection Checklist

Before purchasing an ADTRAN VoIP gateway, verify:

• Exact Total Access model
• ADTRAN part number
• FXS port quantity
• FXO port quantity
• T1 interface requirements
• PRI requirements
• SIP requirements
• MGCP requirements
• PBX compatibility
• Hosted PBX requirements
• SBC call capacity
• Ethernet interfaces
• Routing requirements
• Firewall requirements
• VPN requirements
• QoS requirements
• Voice Quality Monitoring
• Survivability requirements
• Battery or UPS backup
• AOS software
• Support requirements

Why Choose ADTRAN VoIP Gateways?

ADTRAN Total Access gateways are designed specifically for business and carrier environments that need to bridge traditional telephony and modern IP communications.

They can be a strong fit for organizations requiring:

• SIP trunking
• Analog voice migration
• PRI integration
• Hosted PBX
• FXS connectivity
• FXO lifeline
• eSBC functionality
• Voice Quality Monitoring
• Converged voice and data

Why Buy ADTRAN VoIP Gateways from Hummingbird Networks?

VoIP gateway selection requires careful matching of analog interfaces, T1 or PRI connectivity, SIP service, PBX requirements, SBC call capacity, network security, and voice-quality requirements.

Hummingbird Networks offers ADTRAN Total Access VoIP gateways for new deployments, SIP migrations, hosted PBX implementations, and installed-base maintenance.

Customers can turn to our team for:

• ADTRAN VoIP gateways
• ADTRAN SIP gateways
• Total Access 900 Series gateways
• Total Access 900e Series gateways
• Total Access 908 and 908e
• Total Access 916 and 916e
• Total Access 924 and 924e
• FXS gateways
• FXO gateway configurations
• PRI gateways
• SIP-to-analog gateways
• SIP-to-PRI gateways
• eSBC-capable gateways
• Voice and compatibility guidance

Whether you need an 8-port 908e for a smaller branch, a 16-port 916e, a high-density 924e, or an SBC-enabled gateway for SIP trunking and unified communications, Hummingbird Networks can help identify the appropriate ADTRAN VoIP gateway based on analog ports, carrier interfaces, SIP requirements, call capacity, and existing voice infrastructure.

Frequently Asked Questions About ADTRAN VoIP Gateways

What is an ADTRAN VoIP gateway?

An ADTRAN VoIP gateway connects IP-based voice networks with analog or digital telephony equipment such as phones, fax machines, PBXs, T1 circuits, and PRI interfaces.

What is an ADTRAN SIP gateway?

An ADTRAN SIP gateway connects SIP-based voice services to compatible analog phones, PBX systems, PRI circuits, or other business telephony equipment.

What is the ADTRAN Total Access 900 Series?

The Total Access 900 Series is a family of ADTRAN VoIP gateways designed for business voice and data applications using Ethernet and T1 connectivity.

What is the ADTRAN Total Access 900e Series?

The Total Access 900e Series is a newer-generation family of IP business gateways with Ethernet, multi-T1, analog FXS, routing, firewall, VPN, QoS, and optional SBC functionality.

What is the ADTRAN Total Access 908e?

The Total Access 908e is an 8-FXS-port IP business gateway with four T1 interfaces and three Ethernet interfaces.

What is the ADTRAN Total Access 916e?

The Total Access 916e is a 16-FXS-port IP business gateway with four T1 interfaces and three Ethernet interfaces.

What is the ADTRAN Total Access 924e?

The Total Access 924e is a high-density IP business gateway supporting up to 24 FXS ports, with selected models also providing FXO connectivity.

What is an FXS port?

An FXS port supplies an analog telephone interface to compatible devices such as phones, fax machines, and modems.

What is an FXO port?

An FXO port connects the gateway to an analog telephone line or other FXS source.

What is the difference between FXS and FXO?

FXS provides analog service to an endpoint, while FXO receives analog service from an external line.

Can ADTRAN gateways connect analog phones to SIP?

Yes. Total Access gateways can convert between SIP-based voice services and analog FXS interfaces.

Can ADTRAN gateways support fax machines?

Yes. Compatible analog fax machines can connect to FXS ports, although successful fax operation also depends on carrier and VoIP configuration.

Can ADTRAN gateways support analog modems?

Yes, in compatible deployments and when the voice service supports the required modem operation.

Can ADTRAN gateways connect an old PBX to SIP?

Yes. Total Access gateways can be used to connect compatible legacy PBX systems to modern SIP-based services.

Does ADTRAN support SIP-to-PRI conversion?

Yes. Compatible Total Access gateways can bridge SIP voice services and PRI-based business telephony systems.

Do ADTRAN VoIP gateways support T1?

Yes. Total Access 900 and 900e platforms support T1 connectivity, with current 900e models providing four T1/FT1 interfaces.

What is a lifeline FXO port?

A lifeline FXO port can provide an alternate analog PSTN connection for supported calling scenarios during certain WAN or SIP service interruptions.

Do ADTRAN gateways support SBC functionality?

Yes. Compatible Total Access 900e gateways can add Enterprise Session Border Controller functionality.

How many calls can an ADTRAN Total Access 900e SBC support?

ADTRAN states that compatible Total Access 900e devices can support SBC functionality for up to 100 simultaneous calls.

Does Hummingbird Networks sell ADTRAN SBC gateway configurations?

Yes. Hummingbird Networks currently lists Total Access 908e gateway configurations with SBC capacities including 5, 25, 50, and 100 simultaneous calls.

Do ADTRAN VoIP gateways include a router?

Yes. Total Access gateways include business-class IP routing functionality.

Do ADTRAN VoIP gateways have a firewall?

Yes. Compatible Total Access gateways include a stateful inspection firewall.

Do ADTRAN VoIP gateways support VPN?

Yes. Total Access 900e gateways include VPN capabilities for compatible business-network deployments.

Do ADTRAN VoIP gateways support QoS?

Yes. The gateways include Quality of Service functionality designed to prioritize delay- and jitter-sensitive VoIP traffic.

What is ADTRAN Voice Quality Monitoring?

Voice Quality Monitoring tracks call-quality indicators such as MOS, jitter, delay, and packet loss to help troubleshoot VoIP performance.

Can ADTRAN gateways provide local voice survivability?

Compatible Total Access 900e configurations can provide survivability features including local registration, SIP proxy or B2BUA functionality, and FXO lifeline support on selected models.

Can ADTRAN gateways be rack mounted?

Yes. Compatible Total Access gateways can support rack-mount installation, with selected models also supporting wall or desktop placement.

Can ADTRAN gateways use battery backup?

Selected Total Access 900e platforms support compatible battery-backup solutions.

What is the difference between Total Access 908e and 916e?

The primary difference is analog port density: the 908e provides 8 FXS ports, while the 916e provides 16 FXS ports.

What is the difference between Total Access 916e and 924e?

The 924e provides up to 24 FXS ports or specialized FXS/FXO combinations, while the 916e provides 16 FXS ports.

Which ADTRAN gateway should I choose for eight analog lines?

A Total Access 908 or 908e can be appropriate when eight FXS interfaces meet the deployment requirements.

Which ADTRAN gateway should I choose for 16 analog lines?

A Total Access 916 or 916e can provide 16 FXS interfaces.

Which ADTRAN gateway should I choose for 24 analog lines?

A Total Access 924 or 924e can provide up to 24 FXS interfaces.

Does Hummingbird Networks carry ADTRAN Total Access gateways?

Yes. Hummingbird Networks currently lists Total Access 900 and 900e products including 908, 908e, 916, 924, and related configurations.

Can Hummingbird Networks help me select an ADTRAN VoIP gateway?

Yes. Providing the current PBX or phone system, SIP provider, number of analog devices, FXS and FXO requirements, T1 or PRI requirements, SBC call capacity, and network configuration can help identify the appropriate Total Access gateway.

Shop ADTRAN VoIP Gateways

Bridge traditional telephony and modern IP communications with ADTRAN Total Access VoIP gateways for SIP trunking, hosted PBX, PRI delivery, analog voice, fax, SBC, carrier Ethernet, and converged voice and data applications.

From 8-port Total Access 908 and 908e gateways to 16-port 916e and high-density 924e platforms, Hummingbird Networks can help organizations select ADTRAN VoIP gateways based on analog port count, T1 and PRI connectivity, SIP requirements, SBC call capacity, survivability, and existing communications infrastructure.