ISDN Modem Market By Product Type (External ISDN Modems, Internal ISDN Modems, ISDN Terminal Adapters, ISDN-to-IP/SIP Gateways & Migration Equipment); By Application (Business Connectivity, Government & Public Sector, Healthcare & Telemedicine, Industrial Applications, Small & Medium Enterprises [SMEs], Other Applications); By Geography, Segment Revenue Estimation, Forecast, 2026–2032

ISDN Modem Market Summary

The Global ISDN Modem Market was valued at USD 1.61 billion in 2025 and is projected to reach USD 2.04 billion by 2032, expanding at a CAGR of 3.4% during 2026–2032, according to Strategic Market Research. Revenue growth is increasingly linked to replacement hardware, terminal adapters, legacy interfaces, and ISDN-to-IP/SIP migration equipment rather than new ISDN installations.

 

Japan provides the strongest near-term replacement opportunity. NTT's INS-Net connection-equivalent base declined from approximately 1.091 million in March 2025 to 956,000 in March 2026, a reduction of about 12.4%. However, the large remaining installed base, combined with the planned December 31, 2028 shutdown, is creating demand for replacement interfaces, gateways, adapters, and migration equipment. NTT East also increased several INS-Net monthly tariffs by around 7%–11% in April 2025, further raising the cost of maintaining legacy systems.

 

In the United States, demand is being shaped by TDM-to-IP migration, ISDN service grandfathering, and repeated tariff increases. AT&T recorded ISDN BRI rate revisions across 2024, 2025, and 2026, while some PRI services were grandfathered in 2025. This is shifting spending toward replacement interfaces and ISDN-to-SIP/IP gateways used to keep existing PBXs and specialist systems operational during migration.

 

South Korea represents a smaller aftermarket opportunity. Korea Telecom had approximately 68,470 ISDN subscriptions compared with more than 4.11 million xDSL subscribers in 2002, showing that broadband replacement occurred early. Current demand is therefore concentrated mainly in long-life industrial, enterprise, broadcasting, and infrastructure systems.

 

Overall, the market is shifting from conventional modem sales toward higher-value replacement, maintenance, gateway, and migration hardware. Japan is driven by a fixed shutdown deadline, the United States by carrier retirement and rising legacy-service costs, and South Korea by specialist installed-base maintenance. These factors support a moderate revenue growth outlook even as traditional ISDN connections continue to decline.

 

Key Report Takeaways

By Product Type

• Largest & Fastest-Growing Subsegment: External ISDN Modems — accounted for 63.8% of the market and approximately USD 1.03 billion in 2025 and are estimated to expand at approximately 3.8% CAGR during 2026–2032, supported by replacement of ageing standalone ISDN equipment and demand for external interfaces during migration to IP-based communication systems.

 

By Application

• Largest Subsegment: Business Connectivity — accounted for 41.5% share and approximately USD 0.67 billion in 2025, with an estimated 3.2% CAGR during 2026–2032, supported by remaining ISDN-dependent PBXs, business communication systems, and interface replacement requirements during TDM-to-IP migration.

• Fastest-Growing Subsegment: Industrial Applications — accounted for 18.9% share and approximately USD 0.30 billion in 2025 and are estimated to grow at approximately 4.3% CAGR during 2026–2032, driven by long replacement cycles for industrial communication equipment and continued demand for compatible interfaces, adapters, and migration gateways.

 

By Region

• Largest Subsegment: North America — accounted for 36.4% share and approximately USD 0.59 billion in 2025, with an estimated 3.2% CAGR during 2026–2032, supported by enterprise ISDN replacement requirements, TDM retirement, service grandfathering, and migration toward IP-based business communications.

• Fastest-Growing Subsegment: Asia-Pacific — accounted for 24.7% share and approximately USD 0.40 billion in 2025 and is estimated to expand at approximately 4.2% CAGR during 2026–2032, supported by Japan's sizeable remaining INS-Net installed base and the approaching 2028 shutdown, which is accelerating replacement and migration-equipment spending.

 

Recent Developments in the ISDN Modem Market

• June 1, 2026: AT&T Illinois implemented another ISDN BRI repricing, continuing its sequence of rate revisions for legacy ISDN services. Repeated repricing increases the cost of maintaining remaining BRI-based business installations and supports replacement demand for ISDN interfaces and migration gateways within the ISDN Modem Market. (Source: AT&T Illinois — 2026 Tariff Filings)

• May 26, 2026: NTT East introduced a new migration incentive covering users of INS-Net 64, INS-Net 64 Light, and INS-Net 1500, offering free installation-related charges for eligible migrations to FLET'S Hikari services from June 1, 2026. The program accelerates retirement of legacy ISDN connections and creates demand for replacement interfaces and transition equipment required to connect existing business systems with IP-based networks. (Source: NTT East — FLET'S Hikari Migration Incentives)

• November 24, 2025: AT&T Illinois updated the grandfathering status of several legacy telecommunications services, including ISDN PRI. Restricting expansion of existing PRI services pushes businesses with legacy PBXs and specialized communication systems toward replacement interfaces and ISDN-to-IP migration solutions, directly influencing the aftermarket portion of the ISDN Modem Market. (Source: AT&T Illinois — ISDN PRI Grandfathering Filing)

 

Market Trends And Innovation Landscape

While ISDN modems might seem like a legacy technology, several trends are shaping their ongoing relevance and functionality in various sectors. Innovations around ISDN modems are subtle, focusing more on integration with emerging technologies and ensuring compatibility with existing systems. Here’s a breakdown of the key trends and innovations driving the market from 2026 to 2032.

Integration with Newer Communication Technologies

Despite the rise of broadband and 5G, ISDN modems continue to be integrated with newer communication systems. This hybrid approach allows businesses to maintain compatibility with both legacy and next-gen networks. For instance, the integration of ISDN with VoIP systems is becoming more common, enabling businesses to leverage their existing infrastructure while adopting modern Voice over IP solutions. This is particularly significant for companies in areas where 5G or fiber optics are unavailable but there is a need to upgrade communication solutions.

Expert Insight: “While we’re all talking about 5G, we can’t overlook that many businesses rely on ISDN as a bridge technology, especially in developing regions. The trend toward hybrid systems ensures these companies can scale up without ripping out their legacy infrastructure.”

 

Migration to Hybrid ISDN and Broadband Systems

A growing number of businesses are beginning to use hybrid ISDN-broadband systems to ensure they have the best of both worlds: the reliability and low-cost structure of ISDN, combined with the speed and higher data capacity of broadband. This trend is especially prevalent in sectors such as healthcare, where reliable connectivity is critical, and where internet bandwidth requirements are increasing due to the rise of telemedicine and remote diagnostics.

For example, a healthcare facility in rural Europe may still use ISDN for voice communications but might also employ broadband for data-heavy tasks such as transferring patient images or using telehealth services. Such hybrid systems are expected to maintain a steady presence in the market, even as newer technologies take hold.

 

Remote Access and IoT Integration

A significant innovation trend is the use of ISDN modems in Internet of Things (IoT) applications. With IoT devices becoming more prevalent in industries like agriculture, energy, and manufacturing, ISDN modems are increasingly being used to facilitate secure remote access to machines, sensors, and other devices. These industries require continuous data streams, and ISDN provides a stable, albeit slower, option for remote locations where higher-bandwidth solutions like fiber optics or satellite are either too expensive or unavailable.

One example is in remote environmental monitoring. An ISDN modem might be used to transmit data from sensors installed in remote agricultural fields or offshore oil rigs. Here, ISDN’s reliability often outweighs the need for higher-speed data transfer, ensuring that critical environmental data is sent back to the central system with minimal downtime.

 

Sustainability and Eco-Friendly Approaches

Environmental regulations are pushing industries to reduce their carbon footprint. ISDN modems, compared to traditional copper-based broadband systems, consume less power and generate less electronic waste, making them a more sustainable choice. This environmental aspect is being highlighted in certain markets where businesses are seeking ways to meet sustainability goals while maintaining operational efficiency.

Furthermore, as green technologies become more critical, the demand for low-energy consumption communication devices will increase, and ISDN modems—especially the more energy-efficient models—will continue to serve a niche in industries prioritizing sustainability.

 

Security Enhancements

Given the increasing frequency of cyber-attacks and the need for secure communications, ISDN technology’s inherent security is a notable advantage. ISDN’s dedicated connection, unlike broadband’s shared connection, provides higher security for sensitive communications. This is particularly valuable for government and emergency services that handle confidential data and require assured privacy.

Expert Insight: "The security of ISDN, especially when used for government applications, is one reason it hasn’t been completely phased out. Its dedicated line of communication remains more secure than many broadband alternatives, which are more susceptible to hacking."

 

Competitive Intelligence And Benchmarking

The ISDN modem market is relatively niche, with a small number of key players who dominate the landscape. While the market is shrinking in certain regions due to the rise of broadband and newer technologies, these companies continue to lead with innovative solutions and strategies to cater to the specific needs of legacy infrastructure. Below are some of the key players in the market and their strategies for maintaining their foothold.

Siemens AG

• Strategy: Siemens continues to be a dominant player in the ISDN modem market, especially in industrial and business solutions. The company focuses on offering high-quality, reliable ISDN modems that integrate well with legacy infrastructure, particularly in sectors like manufacturing, healthcare, and government.

• Product Differentiation: Siemens modems are known for their durability and robust performance, even in challenging environmental conditions. Their products are often bundled with long-term service contracts, providing ongoing support for businesses transitioning slowly from ISDN to newer technologies.

• Global Reach: Siemens has a strong presence across Europe and North America, where ISDN services are still in use for government, public service, and industrial applications.

 

Alcatel-Lucent (now part of Nokia)

• Strategy: Alcatel-Lucent has shifted much of its focus to broadband and next-gen communication solutions, but it still plays a significant role in providing ISDN modems for businesses and governments in regions where legacy systems are prevalent. As part of Nokia, they have leveraged their broader telecom portfolio to offer integrated ISDN solutions that work seamlessly with newer broadband systems.

• Product Differentiation: Alcatel-Lucent’s ISDN modems are typically positioned as part of a broader communications suite, which includes everything from routers to network management tools. Their products offer interoperability with both legacy and modern networks, making them ideal for hybrid system environments.

• Global Reach: The company has a strong footprint in North America and Europe, where a mix of ISDN and broadband solutions is often used in enterprise and government sectors.

 

Cisco Systems, Inc.

• Strategy: Cisco has diversified its portfolio far beyond traditional ISDN products, but it still plays a role in the market, particularly in the enterprise sector. Cisco’s strategy is to provide networking solutions that can integrate ISDN with newer technologies like IP telephony and broadband.

• Product Differentiation: Cisco’s modems are known for their scalability and integration with networking solutions. Businesses often choose Cisco for its comprehensive technical support and the ability to scale solutions as their infrastructure evolves.

• Global Reach: Cisco maintains a global presence, with significant operations in North America, Asia-Pacific, and Europe. The company’s networking expertise allows it to cater to markets where ISDN still plays a role in remote or backup communication systems.

 

AVM GmbH

• Strategy: A more specialized player, AVM focuses on providing ISDN modem solutions tailored to small businesses and home offices. Their strategy revolves around offering cost-effective, easy-to-deploy products, with a focus on user-friendly features.

• Product Differentiation: AVM modems are popular for their plug-and-play functionality, which is ideal for businesses with limited IT resources. They offer reliable ISDN connectivity with advanced features like remote management and energy-saving modes, appealing to smaller operations.

• Global Reach: AVM’s strongest markets are in Europe, particularly in Germany, where ISDN services remain popular. However, their product range is beginning to attract attention in regions where low-cost ISDN solutions are still in demand.

 

ZyXEL Communications

• Strategy: ZyXEL offers a comprehensive range of ISDN modems designed for both small businesses and larger enterprises. The company has strategically positioned itself as a value-for-money option, focusing on providing affordable solutions that maintain solid performance over extended periods.

• Product Differentiation: ZyXEL modems are often chosen for their cost-efficiency, ease of installation, and wide compatibility with both ISDN and broadband networks. Their modems also come with features like advanced firewall protection and automated configuration for users who may not have deep technical expertise.

• Global Reach: ZyXEL operates primarily in Asia-Pacific and Europe, where the demand for affordable ISDN modems continues to exist, particularly in industries that rely on stable, low-cost connectivity.

 

Competitive Dynamics

The ISDN modem market is largely characterized by a few well-established players offering varying levels of product complexity and service. Siemens and Alcatel-Lucent (Nokia) dominate the high-end market, particularly in government and industrial applications. On the other hand, companies like AVM and ZyXEL are making inroads in the small business and home office sectors by offering affordable and easy-to-use solutions.

Key competitive dynamics include:

• Pricing vs. Quality: Vendors offering premium services (such as Siemens) are competing against low-cost players (like ZyXEL), particularly in emerging markets where cost efficiency is a higher priority than cutting-edge features.

• Hybrid Solutions: Companies that can provide hybrid solutions integrating ISDN with next-gen technologies (such as Alcatel-Lucent and Cisco) are positioning themselves for longer-term relevance, even as the ISDN market shrinks.

• Support and Service Contracts: Vendors like Siemens and Cisco leverage strong service and support networks, which provide long-term revenue streams from maintenance and upgrades. For customers transitioning from ISDN to newer technologies, these extended support agreements are crucial.

• Regulatory Compliance: Vendors offering solutions for government and public sector clients continue to thrive by emphasizing the security and reliability of their ISDN modems. This is especially true in countries with strict regulatory requirements for communication technologies.

 

Regional Landscape And Adoption Outlook

The ISDN modem market exhibits distinct regional dynamics, largely driven by the availability of broadband infrastructure, regulatory requirements, and the legacy adoption of ISDN technology. Each region has its unique adoption patterns, with some markets showing steady use of ISDN technology, while others are rapidly transitioning to more advanced systems. Here's a breakdown of the regional landscape and adoption outlook from 2026 to 2032.

North America

• Market Overview: North America, particularly the United States, has historically been a significant market for ISDN modems due to the widespread use of legacy systems in industries like government, healthcare, and telecommunications. Although broadband infrastructure is extensive, ISDN modems are still prevalent in specific sectors that require secure, stable communication, such as emergency services and certain governmental functions.

• Growth Outlook: The market in North America is expected to experience slow but steady demand during the forecast period, primarily driven by government and industrial applications. As businesses and public services continue to operate within a mix of legacy ISDN systems and newer broadband solutions, ISDN modems will remain in use.

• Key Drivers: Regulatory requirements for secure communications, existing legacy infrastructure.

• Challenges: Transition to 5G and fiber optics, high investment in newer technologies.

 

Europe

• Market Overview: Europe shows a similar trend to North America, where ISDN modems still hold relevance in legacy systems, especially in countries with stringent regulatory frameworks. Nations like Germany, France, and the UK continue to rely on ISDN for critical services, including government communications, utilities, and healthcare. In regions with a slow transition to broadband and where legacy infrastructure remains dominant, ISDN modems are still an affordable and reliable option for enterprises and public institutions.

• Growth Outlook: The European market is expected to grow at a moderate rate, with Germany and France maintaining the largest share of ISDN modem installations. However, countries in Southern Europe and parts of Eastern Europe will see slower growth as broadband adoption increases.

• Key Drivers: Legacy systems in government, industry, and healthcare; regulation-driven demand.

• Challenges: Push towards fiber and broadband systems, evolving regulatory frameworks.

 

Asia-Pacific

• Market Overview: The Asia-Pacific region is the fastest-growing market for ISDN modems, driven by rapidly developing telecommunication infrastructure in countries like China, India, and Japan. While urban areas are increasingly adopting broadband, rural regions and smaller towns continue to rely heavily on ISDN technology due to affordability and limited access to advanced technologies.

• Growth Outlook: In India and China, ISDN modems are still used widely in small businesses and rural sectors, where broadband rollout is slower. This region will see substantial growth over the forecast period, especially as IoT and remote monitoring applications increase in industrial sectors.

• Key Drivers: Expanding telecom infrastructure, rural adoption, low-cost connectivity.

• Challenges: Growing broadband penetration, rising competition from 5G networks.

 

LAMEA (Latin America, Middle East, and Africa)

• Market Overview: The LAMEA region represents a smaller segment of the global ISDN modem market but is showing promising potential in countries like Brazil, Saudi Arabia, and South Africa, where telecom infrastructure is developing rapidly.

  • In Latin America, where ISDN is still prevalent in certain industries, the transition to broadband is slower due to cost constraints and the complex nature of telecom expansion in rural areas.

  • In Africa, ISDN has limited use but is present in government services and small businesses that cannot afford broadband.

  • Middle Eastern countries are seeing steady growth in ISDN use, especially in critical sectors such as healthcare and energy.

• Growth Outlook: The LAMEA region is expected to see moderate growth, particularly in the Middle East and Latin America, as countries modernize their communication infrastructures while still maintaining a reliance on legacy systems. Africa will remain a white space for growth, with many countries still in the early stages of infrastructure development.

• Key Drivers: Infrastructure development, regulatory demand, emerging markets.

• Challenges: Limited broadband access, high costs, and regulatory barriers.

 

Regional Growth Drivers and Challenges

Key Growth Drivers:

• Government Regulations: Many countries continue to require ISDN for certain sectors (e.g., government, healthcare, emergency services), especially where security and reliability are paramount.

• Legacy Infrastructure: Businesses, especially in developing regions, are heavily invested in ISDN technology and are unlikely to make immediate shifts to newer broadband solutions.

• Cost-Efficiency: In markets where budgets are constrained, ISDN offers an affordable, reliable alternative for connectivity.

Challenges:

• Broadband Adoption: The increasing availability of broadband and fiber -optic solutions is reducing the market for ISDN modems in developed regions.

• 5G and IoT: The rise of 5G networks and Internet of Things (IoT) applications is a significant challenge, as these technologies offer more flexible, scalable, and faster alternatives to ISDN.

• Infrastructure Barriers: In some developing regions, the high cost of broadband rollout remains a significant barrier, and the transition to ISDN alternatives will take longer.

 

End-User Dynamics And Use Case

The ISDN modem market is primarily shaped by the adoption of ISDN technology across different industries and end-users. While the transition to newer communication technologies is ongoing, certain sectors continue to rely on ISDN for its reliability, cost-effectiveness, and compatibility with legacy systems. The following sections highlight how key end-users across various industries are utilizing ISDN modems, as well as a specific use case illustrating the ongoing importance of this technology.

Government and Public Sector

Adoption and Use: The government and public sector have historically been major users of ISDN modems, relying on them for secure communication channels, particularly in areas where sensitive data is transmitted. ISDN’s dedicated connection makes it an attractive choice for sectors such as defense, law enforcement, and emergency services, where uptime and security are paramount.

• Use Case: A national emergency response agency in a developing country continues to use ISDN modems for real-time communication during disasters and crisis management. Despite a growing number of broadband solutions, ISDN provides the security and reliability necessary for communication in critical situations, especially in rural or disaster-prone areas.

• Growth Outlook: As governments worldwide push for the digital transformation of services, the ISDN modem market will likely shrink in this sector, but legacy systems will remain in use for specific applications. The transition to fiber optic and 5G networks in government agencies may take several years due to high infrastructure costs.

• Impact: Government contracts and regulations will continue to sustain demand for ISDN modems, especially in critical communication sectors.

 

Healthcare and Telemedicine

Adoption and Use: The healthcare industry still employs ISDN technology for telemedicine, patient data transmission, and remote healthcare monitoring in regions where broadband infrastructure is limited. ISDN provides a stable and secure means to transmit patient data, such as medical images and test results, ensuring compliance with privacy regulations (e.g., HIPAA in the U.S.).

• Use Case: A remote healthcare facility in rural India relies on ISDN modems for telehealth consultations and patient data transmission. With limited broadband infrastructure in the region, ISDN ensures that healthcare providers can send sensitive patient information securely, avoiding potential delays in receiving critical care.

• Growth Outlook: While the healthcare sector is moving toward high-speed broadband and fiber -optic connections, ISDN modems will remain essential in areas with insufficient broadband availability. The global push for telemedicine and healthcare digitalization will continue to create demand, especially in underserved regions.

• Impact: As telemedicine expands, ISDN modems will remain crucial for reliable, secure communication in rural and remote healthcare settings.

 

Manufacturing and Industrial Applications

Adoption and Use: In the manufacturing sector, ISDN modems are often used in remote monitoring systems, telemetry, and industrial automation applications. Many industrial sectors, especially in energy, oil and gas, and utilities, still rely on ISDN for low-bandwidth communication between machinery, sensors, and centralized control systems.

• Use Case: A manufacturing plant in Brazil uses ISDN modems to transmit operational data from remote equipment to the central control room. This allows for real-time monitoring of equipment performance, alerting staff to potential issues before they become critical, without relying on more costly or complex communication systems.

• Growth Outlook: In industrial applications, ISDN modems will likely see modest demand as industries transition toward IoT (Internet of Things) and smart factory solutions that rely on higher-speed communication technologies. However, for legacy equipment and remote locations, ISDN will continue to play a key role.

• Impact: The market for ISDN modems in industrial sectors will shrink gradually, but demand will persist in areas where operational continuity and secure communication are critical.

 

Small and Medium Enterprises (SMEs)

Adoption and Use: SMEs in regions with underdeveloped broadband infrastructure still turn to ISDN modems for voice communication and basic internet connectivity. For smaller businesses with limited budgets, ISDN technology offers a cost-effective alternative for staying connected without requiring substantial investment in fiber optics or broadband.

• Use Case: A small business in Mexico uses ISDN modems to maintain a secure, dedicated connection for point-of-sale (POS) transactions. This reliable connection ensures that the business can continue operating even if broadband services experience downtime.

• Growth Outlook: The demand for ISDN modems from SMEs will likely diminish as broadband internet becomes more affordable and accessible in developing regions. However, businesses in rural and remote areas will continue to use ISDN as a more affordable alternative.

• Impact: SMEs in underserved areas will continue to depend on ISDN for basic communication needs, but as broadband expands, this segment’s demand for ISDN modems will shrink.

 

Use Case Highlight: ISDN for Disaster Recovery and Emergency Services

In a disaster recovery scenario in a remote region of Africa, an ISDN modem was used to maintain communication between local emergency teams and central disaster management authorities. The remote region, which lacked consistent broadband service, faced a natural disaster that required immediate response coordination. ISDN modems ensured reliable and uninterrupted communication between local teams and the main control center, allowing for timely decision-making.

This use case highlights the reliability and resilience of ISDN in environments where connectivity is critical but alternative technologies are either unavailable or too costly. In such situations, ISDN modems remain the go-to solution for emergency services, government communications, and even for businesses that cannot afford to be offline during critical periods.

 

Opportunities & Restraints

Opportunities

• Emerging Markets: As telecom infrastructure continues to expand in emerging markets, ISDN modems will remain an attractive solution for businesses and government institutions that require secure communication but cannot afford the upfront costs of fiber optics or broadband services. In countries like India, China, and Brazil, the affordability of ISDN remains a key selling point.

• Hybrid Communication Systems: The ongoing adoption of hybrid systems, combining ISDN with newer broadband technologies, presents an opportunity for ISDN modem manufacturers to provide solutions that bridge the gap between legacy systems and modern, scalable networks. This integration is especially relevant in industries like healthcare and manufacturing, where uninterrupted communication is crucial.

• Sustainability Push: ISDN’s inherent low-energy consumption and minimal electronic waste generation position it as an attractive choice in markets where sustainability is a growing concern. As industries become more focused on green technologies, ISDN modems could experience a resurgence, particularly in regulatory-driven sectors.

 

Restraints

• Broadband Adoption: The rapid expansion of broadband and fiber -optic networks worldwide, coupled with the increasing availability of 5G technologies, is a significant threat to the ISDN modem market. As broadband services become more affordable and accessible, the demand for ISDN modems is expected to decline over the long term, especially in developed regions.

• High Transition Costs: Businesses relying heavily on ISDN systems may face high transition costs if they decide to upgrade to broadband or next-generation networks. Although ISDN remains affordable, the costs of upgrading infrastructure can be prohibitive for smaller organizations in certain regions, which may slow down the market shift.

 

Report Coverage Table

Report Attribute	Details
Forecast Period	2026 – 2032
Market Size Value in 2025	USD 1.61 Billion
Revenue Forecast in 2032	USD 2.04 Billion
Overall Growth Rate	CAGR of 3.4% (2026 – 2032)
Base Year for Estimation	2025
Historical Data	2019 – 2024
Unit	USD Million, CAGR (2026 – 2032)
Segmentation	By Product Type, By Application, By Geography
By Product Type	External ISDN Modems, Internal ISDN Modems, ISDN Terminal Adapters, ISDN-to-IP/SIP Gateways & Migration Equipment
By Application	Business Connectivity, Government & Public Sector, Healthcare & Telemedicine, Industrial Applications, Small & Medium Enterprises [SMEs], Other Applications
By Region	North America, Europe, Asia-Pacific, Latin America, Middle East & Africa
Country Scope	U.S., Canada, UK, Germany, France, Italy, China, Japan, South Korea, India, Brazil, Mexico, Saudi Arabia, UAE, South Africa
Market Drivers	Replacement of aging ISDN hardware and interfaces, TDM-to-IP and ISDN-to-SIP migration, carrier-led ISDN retirement and service grandfathering, rising costs of maintaining legacy telecom services, demand for compatible gateways and terminal adapters, continued maintenance of long-life enterprise and industrial communication systems
Customization Option	Available upon request