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Change History

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If you are using the Mid-call Payment Transfer feature, your browsers must support a minimum TLS version of 1.2.

For further information about supported protocols and cipher suites, see Supported protocol versions and cipher suites.

Web storage (both session storage and local storage) (if using for ContactPad)

We support the following browsers:

Microsoft® Internet Explorer® version 11

Tip

icon	false

Web browsers

For all browsers you must enable the following:

Cookies
JavaScript
TLS 1.0 2 or later.

Note

Note
Call Recordings, Call Recording Player and Conversation Analyzer are not supported in Microsoft® Internet Explorer® version 11 or earlier.

Microsoft® Edge, latest version

Mozilla® Firefox®, latest version

Google Chrome™, latest version

Apple® Safari® version 6.1 and later

Note
For ContactPad and ContactHub only. You must configure your browser to always allow cookies.

We do NOT support Apple® Safari® on an Apple Mac when using the Mid-Call Payment Transfer solution

We do NOT support privacy mode in any browsers when using ContactPad.

...

Your processor speed and RAM must meet the recommended specification for your operating system.

Screen resolution

1024 x 768 pixels

...

Item

Requirement/recommendation

Server-side ports—outbound traffic (packets leaving the customer's network)

Signaling: 443

Presence: 443

Real-time Transport Protocol (RTP): 10,000-20,000

Client-side ports—
return traffic (packets entering the customer's network)

Softphone selects any available port from the ephemeral range—on most machines ports 1,024 to 65,535.

Protocol

Signaling: TCP

Presence: TCP

RTP: User Datagram Protocol (UDP)

Bandwidth

100 kilobits per second (kbps) (symmetric)

Firewall configuration

Your firewalls should allow UDP to and from the public internet for the browsers that will be using ContactPad with WebRTC.

NewVoiceMedia's WebRTC servers use fixed IP addresses from a public range. The WebRTC client uses Global Low Latency (GLL) architecture. GLL reduces the latency of calls by selecting the closest IP address for WebRTC, but includes failover to another IP address if the closest one is not available. We recommend that you configure your firewall to allow all of the following IP addresses to prevent loss of service in case of failover:

Location	Media Gateways	STUN/TURN
Australia	54.252.254.64 - 54.252.254.127
Brazil	177.71.206.192 - 177.71.206.255
Germany	35.156.191.128 - 35.156.191.255	18.195.48.224 - 18.195.48.255
Ireland	54.171.127.192 - 54.171.127.255 52.215.127.0 - 52.215.127.255
Japan	54.65.63.192 - 54.65.63.255
Singapore	54.169.127.128 - 54.169.127.191
US East Coast (Virginia)	54.172.60.0 - 54.172.61.255 34.203.250.0 - 34.203.251.255
US West Coast (Oregon)	Not applicable	54.244.51.0 - 54.244.51.255
For Global Low Latency and Resiliency	Add all of the above IP addresses as recommended

NewVoiceMedia WebRTC servers use dynamic port numbers. We therefore strongly recommend that your firewall does not limit access to a specific range of port numbers for those IP addresses.

Supported browsers

Google Chrome™, latest version, using the WebRTC for NewVoiceMedia extension.

Note
We develop and test the WebRTC feature in the latest version of Google Chrome™ only.

Salesforce integration

WebRTC is only supported in Salesforce Lightning Experience and in the console view in Salesforce Classic. For information about Salesforce console, see Salesforce help.

Backup phone

All agents should have access to an alternative phone as a backup for WebRTC.

Alternative phone

We recommend that agents have access to an alternative phone for non-NewVoiceMedia related calls.

...

Note
The list of addresses at http://d7uri8nf7uskq.cloudfront.net/tools/list-cloudfront-ips is subject to change.

Region

Cloud

URL	IP addresses

All

(outbound)	IP addresses (inbound)
All
	cdn.newvoicemedia.com	http://d7uri8nf7uskq.cloudfront.net/tools/list-cloudfront-ips
EMEA

Cloud 11 (primary site)


	https://

cloud11

emea.

contact-world.netOutbound:

newvoicemedia.com

194.140.251.7
194.140.251.14
194.140.252.7
194.140.252.14
81.171.141.37
81.171.141.44
89.187.126.117

Inbound

194.140.251.

4

71
194.140.

252

251.

4

84

81

194.

171

140.

141

252.

34

71

89

194.

187

140.

126

252.

114Cloud 8 (secondary site)https://cloud8.contact-world.net

Outbound

194.140.251.71

84
62.173.96.133

194.140.251.

84

4
194.140.252.

71

4

194

81.

140

171.

252

141.

84

34

62

89.

173

187.

96

126.

133

114

Inbound

USA
194.140.251.68 194.140.252.68 62.173.96.130

Cloud 17


	https://

cloud17

nam.

contact-world

newvoicemedia.

net

com

Outbound:

107.23.216.122
18.208.11.69

Inbound:

54.176.97.247
54.176.165.234

54.208.98.242
54.209.40.204

Cloud 16 (California)https://cloud16.contact-world.net

Outbound:

54.

176

219.

97

131.

247

5754.

176

219.

165

131.

234

57

Inbound:

54.219.131.

57

APAC
71 54.219.131.71

Cloud 12 (Sydney)

https://

cloud12

apac.

contact-world.netOutbound:

newvoicemedia.com

13.236.101.83
13.55.214.98

Inbound:

52.74.111.52
52.77.102.86

54.252.173.50
54.252.187.75

Cloud 14 (Singapore)https://cloud14.contact-world.net

Outbound:

52.74.111.52
52.77.102.86

Inbound:

54.254.137.13354.254.137.133
54.254.

137

157.

133

106
54.254.157.106

Versions Compared

Old Version 23

New Version 24

Key

Web browsers

Screen resolution