SIP Trunks
SIP trunking
SIP (or Session Internet Protocol) allows calls to be made from PBXs via VoIP (Voice over Internet Protocol). Connect your IP PBX to the heart of our network and enjoy a flexible, cost effective alternative to ISDN.
Service driven businesses can create a local presence by using virtual numbers with a local area code with your SIP. Multi-site organisations requiring one centralised solution can administer their complete network operation from one location. In the UK businesses must change from their ISDN services by 2025 when this technology will be switched off.
Who should consider SIP trunking?
- Businesses with PABX systems who want to benefit from the features and cost savings of IP telephony will enjoy a service that is much more robust and flexible.
- Multi-site organisations looking to rationalise or reduce the number of phone systems they have by adopting a centralised, resilient solution.
- Service driven businesses where creating a local presence is important, along with the ability to deliver calls into multiple UK numbers.
- Businesses who are relocating, expanding, setting up new branches, merging or taking over other companies would all benefit from the unified communication strategy that SIP supports.
- Organisations considering the improved security that call encryption can bring with Firstcom’s easy to upgrade SIP Encrypt solution.
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Why engage with us?
- Operating since 2004, our enhanced SIP trunking service has been designed from the ground up to be a best-of-breed SIP enabler for IP telephony systems.
- Our engineering team strives towards optimum operational availability, scalability, and quality of service, ensuring ongoing multi-vendor operability both for a wide range of PBXs and also for interconnect circuits.
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SIP Encrypt
The General Data Protection Regulation levies significant fines for businesses which fail to protect their data. If you transmit personal data over the telephone you should take steps to encrypt this as part of your overall data protection exercise.
We understand call security and can help you take care of this as part of your journey towards compliance and best practice.
Wiretap proof VoIP
If you are deploying an internet based telephony solution using an IP PBX or unified communications, then you should consider adding call encryption. When the public internet or even private MPLS lines are used to make and receive calls, there is a risk that these calls can be hacked.
Firstcom’s encrypted SIP service is a fully audited secure VoIP solution that safeguards against eavesdropping and toll fraud. This service is essential if you accept credit card payments over the phone or if you handle confidential information. Call encryption is crucial for contact centres, the legal and financial sector, and pharmaceutical firms.
Information security
Calls made over the internet are vulnerable to malicious hackers. If you transmit sensitive information over the phone, you could become the victim of intellectual property theft. If you are compliance driven or have an information security policy in place, you need to protect your business communications from the risk of remote access wiretapping.
Safeguarding
All organisations, no matter how small, deal with sensitive data relating to their stakeholders. These can be customers, partners, suppliers, employees, or investors. If you don’t take measures to prevent this data from falling into the wrong hands, then you risk damage to your reputation at the very least. And you may end up being fined.
The General Data Protection Regulation
The General Data Protection Regulation (GDPR) came into force in May 2018 and mandates significant fines for businesses that fail to protect the data they hold. If you transmit personal data by telephone, adding call encryption will help you to comply with GDPR.
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Discover the benefits of secure SIP





