From SMPP gateways and OSS/BSS infrastructure to property management systems and cloud-native platforms — we engineer the software that powers your industry.
Real-time OSS/BSS analytics, network monitoring, and SLA management for Tier-1 carriers.
Uptime SLA
SMS routed daily
Years in Business
Projects Delivered
Enterprise Clients
SMS Routed Daily
Infrastructure Uptime
We don't just write code — we understand your industry's regulatory environment, technology stack, and competitive landscape.
End-to-end IT solutions for carriers, MVNOs, and infrastructure providers — built on TM Forum standards (eTOM, Open APIs) and 3GPP architecture.
Carrier-grade messaging infrastructure for A2P providers, SMS aggregators, and CPaaS platforms — SMPP v3.4/v5.0, SS7/SIGTRAN, and RCS.
Digital platforms for brokerages, property managers, MLS boards, and CRE firms — RESO Web API, IDX, and Yardi/MRI expertise.
From infrastructure to application layer, we deliver engineering across the complete technology stack.
Multi-cloud architecture on AWS, Azure, and GCP. We design, migrate, and manage cloud environments with 99.99% uptime SLAs and automated disaster recovery.
Learn moreFull-stack development across web, mobile, and desktop. React, Node.js, Python, Go, Java — we pick the right stack for your requirements and scale.
Learn moreOSS/BSS transformation, 5G core deployment, convergent charging, and network assurance — built on TM Forum Open APIs and 3GPP standards. Amdocs, Netcracker, and Ericsson platform expertise.
Learn moreSMPP v3.4/v5.0 gateways at 50K+ msg/sec throughput. SS7/SIGTRAN signaling, A2P monetization, SMS firewall (GSMA FS.11), and omnichannel CPaaS with REST APIs for WhatsApp, RCS, and Viber.
Learn moreETL pipelines, data warehousing on Snowflake and BigQuery, real-time analytics dashboards, and ML models for churn prediction, routing optimization, and fraud detection.
Learn morePenetration testing, SOC 2 / ISO 27001 compliance, telecom-specific security audits, SS7 firewall configuration, and 24/7 managed threat detection and response.
Learn moreSelected projects from our portfolio across telecom, messaging, and real estate.
Replaced legacy mainframe billing with a cloud-native convergent charging system (OCS) handling 120M+ CDRs daily. Integrated 5 network elements via TM Forum Open APIs. Deployed across 3 geo-redundant data centers.
Faster Rating
Annual Savings
Designed and deployed a multi-tenant SMPP gateway supporting 50M+ messages/day across 40+ carrier connections with intelligent routing, failover, and real-time delivery analytics.
Daily Throughput
Delivery Rate
Built a unified PMS integrating Yardi Voyager with custom resident portal, maintenance workflow automation, ASC 842 lease accounting, and real-time financial reporting across 80+ properties.
Units Managed
Faster Lease Cycle
Dial Tone USA Inc. is a full-service IT consultancy and solutions provider with dual headquarters in Lewisville, Texas and Dhaka, Bangladesh. Founded and led by MD Shiduzzaman, we combine deep domain expertise in telecommunications, messaging infrastructure, and real estate technology with world-class software engineering.
Our team of 50+ engineers, architects, and consultants brings decades of combined experience across cloud platforms, telecom protocols, SMS infrastructure, and enterprise application development. We measure our success by the business outcomes we deliver — not the lines of code we write.
Years Experience
Projects Delivered
Engineers
Global Offices
Whether you need an SMPP gateway, a telecom billing system, or a property management platform — we're ready to help.
Get in TouchTell us about your project — we'll respond within one business day with a tailored proposal.
177 Maccartt Dr, Lewisville
TX-75067, United States
492/20 Apollo Bypass Road, Dhalibari
Vatara, Dhaka-1229, Bangladesh
www.dialtoneus.com