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CLASSOUND is a VoIP operator platform provided by Wildix. Web page: https://www.wildix.com/product/classound-international-calling-service/. Created: May 2019 Updated: February 2023 Permalink: https://wildix.atlassian.net/wiki/x/qw-OAQ |
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What is CLASSOUND?
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- DIDs and FreePhone numbers in 100+ countries
- Outbound calls to 200+ countries
- The only one with OPUS (super HD codec)
- Three POPs in USA, Europe and Asia to shorten your RDP traffic path
- The only one encrypted with TLS and SRTP (SRTP coming soon)
- The only one that doesn’t need any configuration - everything is already set up in your PBX
- SMS capability
- CNAM lookup service (Worldwide Phonebook) for the USA and Canada
- Instant Virtual Porting
Requirements
- Only per-user systems with recurrent subscriptions (no lifetime)
- Min. supported WMS version: 5.0X
Check open ports: CLASSOUND ports
Warning Limitation: max call duration via CLASSOUND is four hours.
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You should configure the incoming calls for the CLASSOUND trunk in this Dialplan context. Remember that certain Dialplan applications allow jumping to other Dialplan context, so you can configure the CLASSOUND Dialplan to jump to "main" or "users" procedure at some point, if needed. 
Managing calls
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Note for the US and Canada: it is possible to request/update CNAM for CLASSOUND DIDs. Refer to Wildix Terms and Conditions, "How to interact with support" section. |
Outgoing calls
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The caller ID number that you send on an outgoing call to CLASSOUND must be a DID number that you own (in other words, you cannot send just ANY NUMBER that you want to send). It is possible to hide the outgoing caller ID using Feature code "Hide number" 92. |
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IMPORTANT: use E.164 (international) number format for outgoing calls. |
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You can add this phone number as "Office number" in WMS -> Users, and it will be used as Caller Number when outgoing calls are placed from those users:
- You can set this phone number as Caller Number explicitly in your Dialplan that manages outgoing calls (by default, users) before routing the call through "classound" trunk:
- You can ask Wildix to set a default phone number for this PBX
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Configuration example for Italian numbers
Configuration example for other numbers
(French numbers are taken as an example): 
Incoming calls
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The configuration example. 
Emergency calls
Universal Emergency services calls require the prior configuration. To do it, open a Customer Care ticket on WMP -> select CLASSOUND, details in Wildix Terms and Conditions.
If the service is not configured - calls will be answered with 503 Service Unavailable.
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In order to ensure emergency calls, you need to provide geolocation data per each CLASSOUND DID, consult CLASSOUND EU (E112 ES) Emergency Services Compliance for details.
US/Canada 911 Emergency calls
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