Communication
List of ports that are required for UCS to run properly.
For functional auto-provisioning, you need to set Option 66 (TFTP server name) on the DHCP server
warning
DHCP Option 66 must be of type String/Text
Services provided by the exchange
The following services are provided by UCS. On the firewalls, permutations are therefore set up on UCS, communication is initiated by IP telephones, users, telephone operators, external parties IS, etc.
| Port | Protocol | Comm. initiation direction | Service | Uses | Purpose |
|---|---|---|---|---|---|
| 22 | tcp | * -> IP UCS | SSH | administrators | administration |
| 53 | udp | * -> IP UCS | DNS | IP phones | XML services on IP phones |
| 67 | udp | * -> IP UCS | DHCP | IP phones | IP address allocation |
| 69 | udp | * -> IP UCS | TFTP | IP phones | provisioning |
| 80 | tcp | * -> IP UCS | HTTP | administrators, operators, IP phones | redirect to HTTPS |
| 123 | udp | * -> IP UCS | NTP | IP phones | time synchronization |
| 443 | tcp | * -> IP UCS | HTTPS | administrators, operators, IP phones | management, use of telephony |
| 514 | udp | * -> IP UCS | Syslog | IP phones | logging in |
| 3478 | udp | * -> IP UCS | STUN/ICE | Web Softphones | NAT detection |
| 5060 | udp | * -> IP UCS | SIP | IP phones, PBX trunks | call joining |
| 5061 | tcp | * -> IP UCS | SIP/TLS | IP phones, PBX trunks | call joining |
| 10000-20000 | udp | * -> IP UCS | RTP | IP and SW phones, PSTN and PBX trunks | voice and video transmission |
Services used by the exchange
The following services are used by UCS. On the firewalls, permutations are therefore set up from UCS, communication is initiated by UCS towards telephones, telephone operators, to external IS, to Microsoft Active Directory, etc.
| Port | Protocol | Comm. initiation direction | Service | Target System | Purpose |
|---|---|---|---|---|---|
| 53 | udp | IP UCS -> * | DNS | DNS of the company (e.g. AD) or on the Internet | OS update |
| 80 | tcp | IP UCS -> * | HTTP | Internet | OS update |
| 123 | udp | IP UCS -> * | NTP | Company's NTP (eg AD) or on the Internet | time synchronization |
| 443 | tcp | IP UCS -> * | HTTPS | information systems, Internet | integration, OS update |
| 514 | udp | IP UCS -> * | Syslog | Log server (eg Kibana/Logstash etc.) | logging in |
| 5060 | udp | IP UCS -> * | SIP | IP phones, PBX trunks | call joining |
| 10000-20000 | udp | IP UCS -> * | RTP | IP phones, PSTN and PBX trunks | voice and video transmission |