Inbound calls will also be forked to the user's SIP device. Receive calls: SIP device users can receive a call from the PSTN, from Teams or Skype for Business users who have SIP devices, and from Teams and Skype for Business client applications.SIP device users can only call users who have phone numbers. Make calls: SIP device users can make calls to the Public Switched Telephone Network (PSTN), to other SIP devices, and to Teams and Skype for Business users.Using SIP Gateway, your users can do all of the following: SIP Gateway connects compatible SIP devices to Teams to help your users migrate seamlessly to Teams telephony. To find out how to configure your SIP devices for SIP Gateway, see Configure SIP Gateway. Compatible devices can be Skype for Business IP phones with standard SIP firmware, Cisco IP phones with multiplatform SIP firmware, or SIP devices from vendors such as Poly, Yealink, and AudioCodes. Now you can sign-in to Teams with your corporate credentials and make and receive calls with a compatible SIP device. SIP Gateway lets your organization use any compatible SIP device with Microsoft Teams to preserve your investments in SIP devices.

Join skype meeting from cisco endpoint