Agile SIP Trunking
Supporting Microsoft Teams, Webex, 3CX and traditional telephony environments like your PBX.
Why Choose Callroute SIP Trunking?
Using Callroute SIP Trunking, you can connect your phone numbers to the environment of your choice in minutes.
You won’t have to worry about porting your numbers ever again.
Simplify migrations with our self-service portal.
Enjoy 99.99% availability with our robust network.
Connect Teams, Webex, 3CX, and your PBX.
Easily map numbers across different services.
Hybrid SIP Trunk Pricing
Hybrid SIP Trunk
Everything you need to enable hybrid telephony for your business.
- Minimum 5 channels
- 1000 domestic mins (01, 02, 03 and mobiles) per channel inclusive
- No set up fees (excludes number porting)
- Access to detailed reporting
- Access to self serve portal to facilitate migrations to Teams or other UCaaS platforms
- Add call recording for an additional £4.95 a channel
£1 per phone number monthly rental applies.
Inclusive minutes exclude premium mobile MVNOs
SIP Trunk Features
Highly available SIP trunk solutions for organizations of any size.
Flexible pricing
Pay as you go month-to-month or fixed annual commitment
Inclusive minutes
Enjoy 300 minutes of UK or IRE domestic calling per channel
Auto scaling
Temporarily burst beyond licensed capacity (conditions apply)
Secure Calling
Ensure your conversations are secure with encryption
Reporting
Detailed call reports enable you to track your usage
Call recording
Record PSTN calls for customer success training & compliance (optional)
Integration
Spread your SIP trunk capacity across cloud and on-premise telephony
Availability
99.99% availability built-in with multi-layered resiliency
SIP Trunking FAQs
What is SIP Trunking?
SIP Trunking replaces the traditional phone line (ISDN or analogue) and typically uses the internet to connect your on-premises phone system (E.G. PBX) to the PSTN.
What is the UK PSTN switch off?
In 2017 Openreach announced that they are turning off the old analogue based PSTN in 2025. PSTN telephone lines include ISDN which many businesses have, these could be ISDN2 (BRI) or ISDN30 (PRI). Additional information can be found on BT’s website.
If I pay per user for Callroute Direct Routing, do I also need to pay for SIP trunking?
No. The SIP channel pricing includes the per-user fee. However, if you still have your PBX (or similar) connected via Callroute, you are still required to pay for the associated channel capacity towards that environment.
Are there any setup costs for a SIP Trunk?
There are no set-up costs for SIP Trunks as our platform is self-service. However, there may be costs associated with number porting (if required).
How many phone numbers can I get with a SIP Trunk?
There is no maximum number of phone numbers. Port or buy as many phone numbers as you need.
How many phone lines do I get with a SIP Trunk?
There is no maximum number of phone lines (channels) per SIP Trunk, you can have as many as you like. There is, however, a minimum count of 5 channels per deployment.
How do I migrate numbers from my PBX to Teams, or other supported services in Callroute?
All numbers and associated assignments will be visible in the callroute.io portal. Numbers can be remapped individually or in bulk. Changes take 1 to 2 minutes to take effect.
Can I see how many channels I am using?
Yes, this can be viewed in the reporting section of the Callroute.io portal.
How is Callroute’s SIP Trunking solution different from others?
We offer pooled capacity across trunk locations and a unique self-service portal to allow easy migration away from traditional PBX environments to services like Microsoft Teams in just a few clicks. Enabling agility is our specialty.
Get Started Today
Speak with our experts to discover how Callroute SIP Trunking can transform your telephony.