This guide provides an overview of the network scope and requirements necessary to successfully set up and configure Evolution PBX on your data network.
Evolution PBX Network Scope Definitions
Intuitive Voice Technology provides support for Evolution PBX, iView software, and hardware purchased from Intuitive Voice. Intuitive Voice does not provide free configuration or support of WANs or LANs unless otherwise contracted. Diagnosing or repairing problems related to your WAN or LAN is limited to eliminating Intuitive Voice software as the culprit and providing best-effort consultation and diagnostics. Standard Evolution PBX Support Agreements do not modify WAN or LAN unless otherwise contracted.
Intuitive Voice support for network hardware including routers, firewalls, and switches is limited to best-effort configuration guidance and information. Professional Services or other paid services may be required for network support or configuration. Note: Email firstname.lastname@example.org or call 602-249-5750 to request a quote for Professional Services or Technology Guidance Services.
Port Forwarding / Firewall Rules
Your router or firewall may require port forwarding to work with VoIP providers or remote VoIP telephones. The following table shows ports that may be important to your service:
|21||TCP||FTP||File Transfer Protocol (FTP) is an optional method for phone provisioning.|
|22||TCP||SSH||Secure Shell (SSH) is used for remote diagnostics and system administration. Forwarding this port from the Internet to the PBX is optional but may be required for support and configuration requests.|
|69||UDP||TFTP||Trivial File Transfer Protocol (TFTP) is an optional method for phone provisioning.|
|80||TCP||HTTP||Hypertext Transfer Protocol (HTTP) is required for web access and the Evolution administration interface. The Enterprise edition of Evolution requires this port for configuration/communication between nodes.|
|123||UDP||NTP||Network Time Protocol (NTP) allows remote phones to pull time from the PBX server.|
|3306||TCP||MySQL||The Enterprise edition of Evolution requires this port for voicemail and CDR storage between nodes.|
|5038||TCP||AMI||Asterisk Manager Interface (AMI) is used to manage nodes in the Enterprise edition of Evolution.|
|5060||UDP||SIP||Session Initiation Protocol (SIP) is required for call signaling and registration information of remote phones and VoIP trunks.|
|5222||TCP||XMPP||XMPP/Jabber service is used for chat within iView|
|10000-20000||UDP||RTP||Real-time Transport Protocol (RTP) carries the audio portion of a call from a VoIP phone or trunk to the PBX.|
|50000-50001||TCP||iView||The interactive operator panel iView requires these ports for remote workstations.|
Local Area Network
Your Local Area Network (LAN) is the physical data network that is inside your office building. The LAN typically consists of one or more Ethernet switches and copper twisted-pair cabling. Evolution and supported telephones require Ethernet switches (not hubs) and require Category 5e or better twisted-pair cabling. You must have a switch with enough ports to plug in the Evolution PBX server and all of the telephones that you plan to have in your office. You will likely need at least two or more ports for other purposes as well. For example,an Evolution system with ten Polycom telephones will require at least eleven Ethernet ports plus whatever other devices that may need to be connected to your network.
(Sample Network Diagram)
Note: Some network hardware may be a multifunction device. For example, your Internet router may actually be a modem, router, and switch contained in one box. Most residential and small business devices include at least a router and switch but often also include a DSL modem, firewall, or a wireless access point. Please be aware of the multifunction device concept when reading this document.
Advanced Ethernet switches may offer additional benefits such as Power over Ethernet (PoE) and Quality of Service (QoS). Power over Ethernet provides a convenient method of supplying power to telephones that support PoE. VoIP telephones normally require an AC power adapter but PoE allows for simplified telephone installation and in some cases reduces the cost of each telephone if the AC power adapter is not purchased. Quality of Service is a method of controlling bandwidth on a network by keeping track of different types of traffic and ensuring that designated traffic is cared for or guaranteed compared to standard or low priority traffic. QoS can help voice traffic get through your network without being trampled by standard data traffic (such as surfing the Web or sending an email). There are different types of QoS that can be configured for both your LAN and your Wide Area Network (WAN).
Wide Area Network
Your Wide Area Network (WAN) is your Internet access and also includes private or virtual connections to other offices if your business network is so configured. There are many different Internet access technologies and each may offer different VoIP capabilities. Typical Internet access types include DSL, cable, and dedicated T1. DSL and cable internet service are frequently oversubscribed so that you share some amount of bandwidth with other Internet Service Provider (ISP) customers. This sharing creates the potential for VoIP quality issues. T1 Internet access is usually dedicated bandwidth to one customer. This improves your odds that your VoIP traffic will not be affected by other customers' traffic. Some ISPs offer Quality of Service features to improve your VoIP quality.
It is important to consider your Internet access hardware, and in particular your router and firewall. Some routers are known to have difficulties with VoIP and other routers require specific configuration to work with VoIP.