We offer all customers completely free pascom.cloud phone system hosting. Simple, Secure, Fast - start free now.
The simplest deployment option for your pascom phone system is to use pascom.cloud which is free for all pascom customers.
Choose the pascom.cloud phone system option and benefit from a hosted PBX without requiring any in-house or rented hosting as we take care of the hosting for you - free of charge. You can get started within minutes without any installation hassle or any additional hardware being required.
Modify Your Firewall
Many companies have no Internet access restrictions and can therefore immediately start using pascom.cloud without needing to make any alterations to their Firewall.
However, should you choose to, you can specify which internet services your company network is permitted to access by opening the following ports:
Telephony and Instant Messaging
|TCP 5061||SIP-TLS - secure SIP communication|
|TCP 5222||pascom desktop and mobile client access|
|UDP 30000 - 35000||SRTP - encrypted Voice Data|
|UDP 3478||Access for video functionality|
|UDP + TCP 19302||WebRTC|
|TCP 636||LDAPS for telephone book access via LDAP|
|TCP 8884||Provisioning of desktop IP phones (hardware telephones)|
|TCP 8885||VPN tunnel direct to the phone system|
pascom.cloud marks voice and signal packets. Many routers / switches take this into account as standard or can be configured accordingly.
|Package type||TOS||COS||DSCP decimal|
|Voice||ef / 184||5||46|
|Signaling||cs3 / 96||3||24|
All pascom clients also mark packages accordingly. Please note that group policies must be set for this under Windows. See Windows QoS Settings.
Destination IP addresses
Our recommendation is to restrict only destination ports and not destination IP addresses. pascom.cloud uses a variety of services and balancers and thus also corresponds to many destination IP addresses. The list of destination IP addresses is constantly being expanded and is therefore difficult for you to maintain.
If you still need a current list of destination IP addresses, please contact our support.