The assignment is based on performance metrics of the datacenters and geographical proximity to the SBC. When the SBC sends a request to resolve this name, the Microsoft Azure DNS servers return an IP address pointing to the primary Azure datacenter assigned to the SBC. The connection point for Direct Routing are the following three FQDNs: This is useful in environments where I may want to route some calls to existing on-premises infrastructure (call centres, analogue endpoints, other 3 rd party telephony infrastructure), but have the bulk of my organisation’s PSTN calls route via a Telstra Calling Plan (ignore “Microsoft Calling Plan” in the diagram below, in Australia it’s known as a Telstra Calling Plan): This means we now have greater flexibility in deployment options: I can choose to have some calls route via on-premises infrastructure, and other calls to route to the PSTN network direct from the cloud via Telstra Calling. The other key differentiator with Direct Routing is that I no longer need to deploy the Cloud Connector Edition virtual machines as well as an SBC to provide connectivity to the Office 365 cloud: a certified SBC is all that is required.Īnother major difference with Direct Routing is that it can be deployed side by side with Telstra Calling for Office 365 Calling Plans. However, CCE will support PSTN connectivity for Skype for Business Online only, not Microsoft Teams. Microsoft Cloud Connector edition was a great way to enable PSTN connectivity for Skype for Business Online users, particularly as native cloud calling plans are only now available in Australia. Requires on-premises infrastructure (SBC & Hyper-V Host with VMs). Cloud Connector Edition (CCE) – enables PSTN connectivity for Skype for Business Online only.Telstra Calling for Office 365 – enables PSTN connectivity for both Skype for Business Online and Microsoft Teams.Requires on-premises infrastructure (SBC). Direct routing for Teams – enables PSTN connectivity for Microsoft Teams only.To enable connectivity to the PSTN network, there are three options:.To enable PBX like capabilities in either, users must have a Phone System license.There are two platforms in the Microsoft cloud that can provide voice services: Skype for Business & Microsoft Teams.PGL has developed special expertise not only in grating writing, but also in optical coatings, reactive-ion etching, optical metrology, and precision cleaning, inspection, and handling of large optics.To summarise the options for PSTN connectivity available today: Our focus is on gratings for lasers and laser systems with applications in the scientific research, industrial, medical, defense, and semiconductor markets. PGL then expanded its technology to include metallic reflection gratings, transmission gratings, two- dimensional gratings, and even focusing gratings that comprise curved lines. Plymouth Grating Lab first commercialized Scanning Beam Interference Lithography (SBIL) originally pioneered at MIT to enable production of meter- class multilayer dielectric (MLD) diffraction gratings with exceptional uniformity, high laser damage threshold, and low stress in vacuum. Coating Materials Large variety (metals & dielectrics).Substrate Materials Variety (fused silica preferred).Diffracted Wavefront Error Depth 10 – 5,000 nm (depends on Pd/Freq).
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