Insights

Growth momentum CornerStone is recognized among the fastest-growing private companies and has demonstrated rapid expansion within the telecom space, presenting a strong upsell opportunity for bundled voice, data, cloud, and hosted IP services to scale with their clients.

SMB focus With a small to mid-size employee base and a focus on business customers, CornerStone targets organizations that require cost-effective, scalable communications and cloud solutions, making them an ideal candidate for managed services, hosted PBX, and remote workforce connectivity offerings.

Cloud and data center emphasis Their portfolio highlights cloud computing and data center services, suggesting cross-sell potential for advanced cloud networking, security, disaster recovery, and WAN optimization to improve reliability and performance for growing customer networks.

Local support advantage A differentiator is local support teams delivering customer service, which can be leveraged to position proactive account management, service level guarantees, and personalized onboarding as a value driver for mid-market enterprises seeking reliable regional partners.

Cost optimization angle Their solution set aims to reduce capital expenditures and maintenance for customers, creating sales opportunities around cloud adoption, virtualization, SIP trunking, fiber access, and bundled storage and connectivity to modernize legacy infrastructures.

Similar companies to CornerStone Telephone Company

CornerStone Telephone Company's Email Address Formats

CornerStone Telephone Company uses at least 1 email format:
CornerStone Telephone Company Email FormatsExamplePercentage
FLast@cstel.comJDoe@cstel.com
100%

Frequently Asked Questions

What is CornerStone Telephone Company's phone number?

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You can contact CornerStone Telephone Company's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is CornerStone Telephone Company's official website and social media links?

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CornerStone Telephone Company's official website is cstel.com and has social profiles on LinkedIn.

How much revenue does CornerStone Telephone Company generate?

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As of October 2026, CornerStone Telephone Company's annual revenue is estimated to be $10M - $25M.

What is CornerStone Telephone Company's NAICS code?

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CornerStone Telephone Company's NAICS code is 517 - Telecommunications.

How many employees does CornerStone Telephone Company have currently?

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As of October 2026, CornerStone Telephone Company has approximately 26 employees across 1 continents, including North America. Key team members include Board Of Directors: R. D., Provisioning Manager: T. A. and General Manager: J. M. Explore CornerStone Telephone Company's employee directory with LeadIQ.

What industry does CornerStone Telephone Company belong to?

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CornerStone Telephone Company operates in the Telecommunications industry.

What is CornerStone Telephone Company's email format?

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CornerStone Telephone Company's email format typically follows the pattern of FLast@cstel.com. Find more CornerStone Telephone Company email formats with LeadIQ.

When was CornerStone Telephone Company founded?

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CornerStone Telephone Company was founded in 2002.
CornerStone Telephone Company logo

CornerStone Telephone Company

TelecommunicationsNew York, United States11-50 Employees

CornerStone Telephone Company is a telecommunications provider that serves business customers with a range of voice and data services, cloud computing, data center capabilities, and hosted IP offerings. Its approach emphasizes local support as a differentiator, aiming to give clients control and visibility over their communications and IT resources while supporting growth and consolidation of services. Based in Troy, New York, the company operates within the telecom sector and targets businesses seeking scalable connectivity, remote collaboration via hosted IP phone systems and mobility features, and cost-efficient computing and data solutions. CornerStone highlights its ability to tailor configurations to meet specific client needs and to reduce capital and operating expenses through its mix of voice, data, and cloud services. The firm has received recognition for growth in the private company sector and has been noted for specific partnerships and awards within the cloud and hosted services space.

Section iconCompany Overview

Phone number
Website
cstel.com
NAICS Code
517 - Telecommunications
Founded
2002
Employees
11-50

Section iconFunding & Financials

  • $10M - $25M

    CornerStone Telephone Company's revenue is estimated to be in the range of $10M - $25M

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