TalkAssure™ SIP trunking gives you virtual telephone lines (channels) delivered over a high-speed IP connection, so your call capacity is no longer constrained by physical circuits.
Add the call capacity you need for simultaneous calls, then adjust it as your organisation grows or changes, without installing extra phone-line hardware.
Use a simple rule-of-thumb calculator based on typical industry ratios to see how many concurrent call channels you may need. Adjust the slider to match how your teams work.
How call-heavy is your environment?
Spare capacity for peaks / resilience
Ideal for small offices, branch sites or first-time SIP deployments.
from £29.95 / month
For growing teams and busy single-site deployments
from £49.95 / month
For contact centres or multi-site organisations
from £99 / month
Add or remove SIP channels as required, without ordering new physical lines or hardware.
In most cases, yes. The key is whether your PBX/gateway/SBC supports standard SIP trunking. We’ll confirm compatibility and recommended configuration (codecs, NAT, SIP registration vs IP-auth, etc.) before you migrate.
Yes — number porting is commonly used so you can retain your numbers. Hybrid setups are also possible during migration so you can move in phases.
It depends on how “call-heavy” your teams are and what your busiest hour looks like. Use the estimator as a starting point, then we’ll sanity-check it against real call patterns and your platform.
You can design for continuity using call forwarding / rerouting rules and, where appropriate, multiple connections or diverse routing. The right approach depends on how critical inbound calling is for you.
Users are people/extensions. Channels are simultaneous external calls at a moment in time. Many offices share channels across more users because not everyone is on the phone at once.
Final pricing will depend on the number of channels you take, the call plans you pair with your trunks and any international numbering requirements. Use this as a guide, then request a quote for a tailored proposal.
Get a quote and a clear migration plan
Tell us what you have today (phone system/Teams, numbers, and expected call volumes). We’ll recommend channel capacity and routing options and confirm any lead times for onboarding and number changes.
