# teleSys Software, Inc.

> teleSys Software is a San Mateo boutique telecom firm that has quietly kept the world's phone calls and texts connected since 1997. It builds carrier-grade signaling software - the invisible traffic-control layer that routes 2G, 3G, 4G, and 5G networks - including Diameter Signaling Controllers, SS7/SIGTRAN transfer points, signaling firewalls, and 5G SCPs. Its MACH7 product line runs in 400+ installations across 100+ operators worldwide, serving more than 500 million subscribers through the major Tier 1 carriers.

- **Founded:** 1997
- **Headquarters:** San Mateo, California, United States
- **Founders:** Bobby Bahl (Founder & CEO)
- **Team size:** ~79 employees, with roughly 75% dedicated to R&D
- **Products:** Diameter Signaling Controller (DSC), MACH7 product line, 5G SCP (Signaling Controller Proxy), Signaling Firewall, Virtualized / Cloud-Native Signaling
- **Notable:** Founder Bobby Bahl led deployment of the first SS7 network in the United States at Sprint., Delivered the first software-based, highly available signaling solution to AT&T Wireless in 1999., 400+ installations across 100+ operators worldwide.

## Products & services

- **Diameter Signaling Controller (DSC)** — Core routing and control for 2G/3G/4G roaming, session management, load balancing, and protocol mediation across multi-generation networks.
- **MACH7 product line** — Family of carrier-grade signaling products (e.g., MACH7-SS7, MACH7-AN, MACH7-iSG, MACH7-iDC) enabling SS7/SIGTRAN signaling transfer (STP) and IP-based interconnection of network elements like HLRs, SCPs, MSCs, and SSPs.
- **5G SCP (Signaling Controller Proxy)** — Cloud-native signaling control for 5G core networks, supporting service-based architecture and intelligent routing.
- **Signaling Firewall** — Fraud and security platform that protects signaling networks from threats, supporting revenue protection and signaling security analytics.
- **Virtualized / Cloud-Native Signaling** — Solutions that migrate operators from costly bare-metal infrastructure to virtualized, COTS, and cloud environments without service disruption.
- **Professional Services** — Customer care, custom development, network migration, and training for signaling network deployment, modernization, and management.

## Achievements

- Founder Bobby Bahl led deployment of the first SS7 network in the United States at Sprint.
- Delivered the first software-based, highly available signaling solution to AT&T Wireless in 1999.
- 400+ installations across 100+ operators worldwide.
- Products serve more than 500 million subscribers globally.
- Pioneered cloud-ready signaling, enabling carriers to migrate from bare metal to cloud infrastructure.

## Latest updates

- **2026-06** — Continues to develop cloud-native 5G SCP and signaling-firewall offerings for multi-generation networks.

## Links

- Website: https://telesys.com
- LinkedIn: https://www.linkedin.com/company/telesys

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Profile page: https://yespress.io/telesys-software-inc
Published by YesPress — https://yespress.io
Last updated: 2026-06-20