- Microsoft Lync / Skype for Business
- Introduction
- Integration features
- Example on-prem deployment
- On-prem Pexip Infinity configuration
- On-prem Lync/Skype server configuration
- Adding more on-prem nodes or locations
- Example public DMZ deployment
- Public DMZ Infinity configuration
- Configuring Infinity as a Lync/Skype gateway
- Certificate creation and requirements
- Presence and contact lists
- Multiple SIP domains (public DMZ)
- Configuring nodes to work behind NAT
- Firewall ports
- Troubleshooting
- Using Lync/Skype clients with Pexip Infinity
Download Lync/Skype guide as PDF
Firewall ports for Lync / Skype for Business integrations
When integrating Pexip Infinity with Microsoft Lync and Skype for Business
| Direction | Purpose | Protocol | Source | Destination |
|---|---|---|---|---|
| Between the Lync/SfB FEP and the Conferencing Node (bidirectional) | SIP signaling | TCP | <any> | 5061 |
| From Lync/SfB clients towards the Conferencing Nodes | RTP/RTCP media | UDP | <any> | 40000–49999 |
| From Lync/SfB clients towards the Conferencing Nodes | HTTP conference avatar | TCP | <any> | 80 |
| From the Conferencing Nodes towards a Lync/SfB Edge server (AV Edge Interface) | RTP/RTCP/RDP media | UDP / TCP | 40000–49999 | 50000–59999 |
| From the Lync/SfB Edge server (AV Edge Interface) towards Conferencing Nodes | RTP/RTCP/RDP media | UDP / TCP | 50000–59999 | 40000–49999 |
| From the Conferencing Nodes towards Lync/SfB clients or Lync/SfB servers | RTP/RTCP/RDP media | UDP / TCP | 40000–49999 | <any> |
| From the Conferencing Nodes towards the TURN server | RTP/RTCP media | UDP | 40000–49999 | 3478 |
| From the Conferencing Nodes towards the Lync/SfB Web Conferencing service | PSOM (PowerPoint presentation from Lync/SfB) | TCP (TLS) | 55000–65535 | 443 / 8057 † |
| From the Conferencing Nodes towards the Lync/SfB Front End server or Edge server | HTTPS (PowerPoint presentation from Lync/SfB) | TCP (TLS) | 55000–65535 | 443 |
| † typically 443 for Web Conferencing Edge and 8057 for a Lync/SfB Front End server / FEP | ||||
For a complete list of Pexip Infinity Conferencing Node port usage, see Pexip Infinity port usage and firewall guidance.
* Note that where this documentation refers to "Lync/SfB", it represents both Microsoft Lync and Skype for Business unless explicitly stated otherwise.