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SIP Profile 290: Manipulations for inbound messages from Phone System ................... 21
SIP Profile 280: Manipulations for REFER INVITE to Phone System ............................... 23
SIP header Pass-through list ........................................................................................ 24
Options Keepalive ............................................................................................................ 25
SRTP Crypto .................................................................................................................... 25
STUN ICE-Lite (For Media Bypass enabled only) ............................................................. 26
Phone System Tenant ...................................................................................................... 26
PSTN Trunk Tenant .......................................................................................................... 26
Number translation rules .................................................................................................. 27
From PSTN translation rule with non +E164 .................................................................. 27
From Phone System translation rule with +E164 ........................................................... 27
Codecs ............................................................................................................................ 27
Dial peers ........................................................................................................................ 28
Outbound Dial-peer to the PSTN using UDP with RTP .................................................. 28
Inbound Dial-peer from the PSTN using UDP with RTP ................................................. 28
Outbound Dial-peers to Phone System using TLS with SRTP ....................................... 29
Inbound Dial-peer from Phone System using TLS with SRTP ....................................... 30
Outbound Dial-peer to Phone System for REFER using TLS with SRTP ........................ 31
Privacy Headers ........................................................................................................... 31
Routing Calls to a 911 Service Provider ........................................................................... 33
Configuration example ..................................................................................................... 35
Microsoft Phone System Direct Routing configuration ......................................................... 45
Create Users in Microsoft 365 ......................................................................................... 45
Configure Calling policy in Microsoft Teams Admin Center. .......................................... 50
Configure Caller ID policy in Microsoft Teams Admin Center. .......................................... 51
Configure User parameters using PowerShell. ................................................................. 52
Create an Online PSTN Gateway ..................................................................................... 52
Configure Online PSTN usage .......................................................................................... 53
Configure Voice Route ..................................................................................................... 53
Configure Online Voice Routing Policy ............................................................................. 54
Calling Line Identity Policy................................................................................................ 54
Appendix A – Configuring CUBE High Availability for Microsoft Phone System .................... 56
Network Topology ........................................................................................................... 56
Direct Routing for Microsoft Phone System and CUBE HA Settings: ............................. 56