Prerequisites for a VoIPSure deployment

Prerequisites for a VoIPSure deployment

Connectivity:

  1. Reliable high speed Internet Connection
  2. Email Access - each user must have a unique and valid email address, and the ability to access their emails from wherever they intend using the VoIP service.
  3. Firewall configuration - Traffic must not be subject to "Deep Packet Inspection" or web filtering
  4. Ideally DHCP should be available. Please advise prior to installation if static IP Addressing is required and provide network details.
  5. VLAN - please advise prior to installation if the IP Phones are to be connected to a specific network and provide network details.
  6. If you wish to connect your VoIP device via WiFi (Yealink T54W or Grandstream WP820 only), please provide us with your SSID and PSK details so your VoIP devices can be provisioned prior to dispatch.
  7. SIP ALG must be disabled (also known as SIP Transformation, SIP Helper or SIP Inspection)

CallSwitch Communicator:

  1. The Mobile version of CallSwitch Communicator is supported on recent versions of IOS and Android. Legacy systems such as Blackberry, Symbian or Windows Mobile are not supported.
  2. A valid account held with the relevant application store is required, and the user must have access to their login credentials for the store. 
  3. The Desktop version of CallSwitch Communicator is supported on Apple and Windows computers. Linux is not supported.
  4. If the Desktop version of CallSwitch Communicator is to be used as a Soft Phone, then the host computer must be equipped with working speakers and a microphone. A USB communications headset is ideal for this.
  5. To use the Video Meeting feature that the Desktop version CallSwitch Communicator provides, a working Web Cam is required as well as the aforementioned sound hardware.

Firewall Rules:

Traffic must be permitted to/from the following URLs and/or IP addresses on all Routers/Firewalls associated with your network/internet connection. It may be necessary to speak with your ISP in this regard as the ISP may operate their own security devices in addition to your own.
  1. *.callswitch.net (185.138.198.0/24  & 185.138.199.0/24 & 185.43.130.0/24)
  2. rps.yealink.com (for phone provisioning)
  3. uk.pool.ntp.org (time server)

Port Assignments:

The following ports must be permitted:

Physical Handsets - 

  1. TCP: 
    1. 53 (DNS)
    2. 80 (HTTP config & web GUI)
    3. 443 (HTTPS config & web GUI)
    4. 5060-5069 (SIP)
    5. 10001 (Presence)
    6. 10005 (Presence)
  2. UDP: 
    1. 54 (DNS)
    2. 123 (NTP)
    3. 5060-5069 (SIP)
    4. 10000-20000 (RTP)

Desktop Communicator - 

The following are used for Communicator in addition to those mentioned above.
  1. TCP:
    1. 5222 - 5223 (Jabber)
    2. 10005 (Communicator login Proxy)
    3. 10007 (Communicator login Proxy)
    4. 10009 (Communicator login Proxy)

T38 Fax -

  1. UDP:
    1. 4000 - 4999

Power Source:

One of the following power sources is required (or a combination thereof) -
  1. POE Switch in data cabinet (preferred)
  2. Individual Power Packs or POE Injectors

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