MetaSwitch (Microsoft)
SIP setup
MetaSwitch (acquired by Microsoft in 2020, now branded 'Microsoft Metaswitch') is the softswitch under many US regional carrier voice products. Like BroadSoft, end-customers don't configure it directly; your carrier provisions a BYOD SIP endpoint on your line and sends you credentials.
MetaSwitch is a carrier-side softswitch; all subscriber provisioning happens inside the operator's OSS. You need their help.
What to do first
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01
Look at your business phone bill
If the bill mentions 'hosted PBX', 'SIP Centrex', 'Hosted Voice', or 'MaX UC / MetaSwitch MaX' it's very likely a Metaswitch platform. Note your account number and the main business number.
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02
Open a BYOD SIP ticket with your carrier
Use the script below. Emphasize 'BYOD SIP device' and 'remote registration from a cloud server'; that language matches what your carrier's provisioning team understands.
Say this when support picks up
- Hi, I have a Metaswitch-backed business line with your company. I need to register a third-party SIP client (an AI receptionist) against one of my extensions.
- Please provision a BYOD SIP device on my account and send me the SIP registration URL, the SIP username, and the SIP password.
- If you have an access list or SBC policy that restricts registration IPs, please tell me what range to use or what to add to the allowlist.
- Some MetaSwitch carriers only allow BYOD registration from a specific IP range they supply you with. Confirm whether their SBC will accept registration from an arbitrary cloud IP.
- If your carrier ships a 'MaX UC' softphone branded app, that's a sibling of MetaSwitch and uses the same SIP backend. The credentials from the ticket will work with SoloDial regardless of which client branding is on your account.