As one of the nation’s leading business phone system providers, we know a thing or two about secure lines of communication.

IP-based systems have revolutionized the way businesses communicate, allowing users to work from remote sites while keeping in touch with their most important contacts. Unfortunately, with those benefits come increased security risks. As one of the nation's leading business phone system providers, we know a thing or two about secure lines of communication.

Remote workers with several devices at different sites present hackers with multiple points of entry. Despite their best efforts to secure installed devices, no business telephone system vendor can guarantee the security of your system. There are, however, several ways you can help prevent unwanted access to your network and devices.

Business Phone System Security

At TelWare, we understand that users are often concerned about the security of their phone system, and are always looking for ways to protect against unwanted access. We’ve put together some IP security tips to help you minimize your system's vulnerability.

Toll Fraud

  • Request that your service provider block long distance access, especially international calls, and provide a long-distance account code or set up credit card-only long-distance calling.
  • Since most users can receive voicemail messages via their email, restricting dial-in voicemail access can help prevent unauthorized access to internal call routing. Be aware, hackers tend to attack voice mailboxes and systems at the start of weekends, holidays, or after hours.
  • Maintain a proper employee database. Delete users and voice mailboxes that are no longer active.


  • Make sure your network firewall is secured and up-to-date.
  • Add a session border controller (SBC) to your network to secure remote devices.
  • Ensure that premise equipment is secured in an environment to which only trusted authorized personnel have access.

Best Practices

  • Ensure that equipment has a proper maintenance and support contract in place.
  • Ensure that equipment has the latest software and security patches installed.
  • Utilize a “strong” internal password policy. Strong passwords usually include at least 8 characters, both upper- and lower-case letters, numbers and at least one special character.
  • For numerical passwords, avoid digit strings that are repetitive, sequential, ascending or descending numbers or any part of the telephone number.
  • Ensure only trusted administrators know administrator passwords. Change company passwords quickly after staffing changes.
  • Disable external call forwarding unless absolutely required to help prevent toll fraud.

By implementing these tips and best practices, you can improve your business' network infrastructure and decrease the risk of a security breach. To learn more about how TelWare can improve your business’ IP security, call 1-800-637-3148.

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