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Make and receive business phone calls with Direct Routing for Microsoft Teams

An introduction to SIP2teams

SIP2teams is a cloud SBC service that provides SIP Trunk call integration to a Microsoft Teams tenant with a managed Microsoft phone system via Microsoft Direct Routing.

The SIP Trunk is provided as an addition to SIP2teams integration allowing Connect365 to build a solution that perfectly fits your business requirements. SIP2teams provides a better value, enhanced and manageable alternative to ‘Microsoft Teams Calling Plans’, which can be expensive and provide few additional features.

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What is Microsoft Direct Routing?

Direct Routing is a Microsoft Teams feature that lets you connect a supported Session Border Controller (SBC) with a third-party telephony system (Connect365) to a Microsoft Phone System.

With this capability, for example, a local geographic non-Microsoft telephone calling option can be configured to work with a Microsoft Teams Client. The traffic connection between Microsoft and an SBC is typically over the internet and the VOIP call or PSTN break out is local to the SBC location.


Why Choose SIP2teams?

SIP2teams offers an enhanced highly available and highly secure telephone number call alternative to the native Microsoft Teams Calling Plans using Direct Routing and all at a flexible and competitive price point.

SIP2teams is a cloud-based Session Border Controller (SBC) service residing ‘within’ Microsoft’s Azure Cluster and so does not pass traffic over the internet. SIP2teams offers a noted enhanced service, that registers to Connect365 SIP Trunks along with associated telephone number ranges and configures them for use by a user phone system license or service, pre-provisioned in a Microsoft Teams tenant phone system.


The SIP2teams service offers a traditional phone system style ‘User to Line ratio’ opportunity, meaning the number of SIP channels does not have to match the User and Services count on the Teams tenant.

For example, a typical 1:1 (Teams user: SIP Channel or MS Calling Plan) ratio can be replaced by SIP2teams to replicate the time honoured 1:3 (User: Line/Channel) ratio from traditional PBX solutions.

Furthermore, this ratio can be scaled to suit any potential end requirement e.g., 1:4, 1:8, 1:20 etc…. depending on the required capacity for inbound or outbound calls by the company tenant at any one time.

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SIP2teams Key Benefits

It’s simple, Connect365 provides a better calling service for their customers. They understand customers calling needs better than the IT giant, Microsoft.

  • SIP2teams is secure within Microsoft’s Azure Cluster and is highly available 

  • ‘Auto Sync’ is a key feature that negates to need to carry out complicated ‘Powershell’ tasks to associate a telephone number to a Teams user or service. All essential and commonly missed task entries are fulfilled by this unique feature

  • No End User Microsoft O365 Admin credentials are held by the platform as they are not cached after token use

When used with HV.Select SIP Trunking, Complimentary and compensatory features can be introduced to enhance or provide better control of inbound and outbound call establishment and experience, such as continuity plans, analytics, audio bridges, auto attendants to name a few.


As part of the solution we will be providing Yealink MP54 and Yealink MP56 devices


Hosted Phone Solution 
Users: 32  
Value: £25,000
Length: 5 Years


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Hosted Phone Solution 
Users: 38  
Value: £46,878
Length: 5 Years

Form IT

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Hosted Phone Solution 
Users: 7   
Value: £7,000
Length: 5 Years

Omni Security

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We have been delighted with the service from Connect365 from initial contact to installation and particularly with the after care. We wouldn’t hesitate to recommend them

Director, Law and Lewis

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