Network Prerequisites for CloudVoice Deployment

VLANS

Switching infrastructure must be able to support multiple VLANS. Suggested VLANS are: (1) Voice, (1) Data, (1) Video (If applicable) and any additional VLANS as required by CLIENT.

Quality of Service

Switching, Routing and Firewall infrastructure must be able to support QoS. Suggested QoS configurations are:

• QoS across all routers, switches and firewalls
• DSCP EF = RTP Traffic
• COS 5 = RTP Traffic
• DSCP AF31 = Control (SIP)
• COS 3 = Control (SIP)

Layer 3

Voice VLANS must be able to route between each other and the internet

DHCP

Local DHCP distribution at each location

DNS

Local or Internet must be available

Bandwidth

Each concurrent call requires 80k of bandwidth

Network Drops

A network drop/power outlet must be within 6’ of each phone location or longer patch/power cables must be provided by CLIENT. (Power requirement is only for phones that won’t utilize POE switches)

Content Filtering

Disable content filtering for traffic with a destination of 74.213.137.0/24 and 66.51.147.0/24

Firewall

Disable SIP ALG on Firewall - Make sure that any SIP ALGs, SIP Helpers, or SIP Proxy Actions are disabled in the firewall, our platform handles those tasks itself and those features generally cause problems.

Firewall Ports

The following ports must opened for outbound communication to 74.213.137.0/24 and 66.51.147.0/24:

Phone Vendor Support

We recommend directly allowlisting the domain names: *.ymcs.yealink.com and *.yealink.com; ports: 443, 80, 8110.

For a more thorough list if there are problems, additional information can be found here: https://support.yealink.com/en/portal/knowledge/show?id=6476e6806a27da76bd06a8d2