VoIP Providers or SIP Trunks delivers telephone services and unified communications to customers who uses and are equipped with SIP Based PBX like 3CX.
Unified communications applications provides services like; voice calls, video conferencing, and web conferencing.
Requirements:
- Supported VoIP provider (SIP Trunk)
- Firewall tested and passed
- Supported VoIP Provider
- Easy Setup
- Tested and passed by 3CX
- Supported by 3CX Support
- Generic VoIP Provider
- Not tested by 3CX
- No available 3CX Support
- Provides Public Switched Telephone Numbers (PSTN)
- Transmit via existing Internet Connection
Adding a Provider:
- From Management Console, go to SIP Trunks
- Click on Add SIP Trunk button
- Choose Country and Supported Provider
- Then set the Main Trunk Number
Note: This will act as “Catch All” for all non created DIDs for the trunk.
DID Inbound Rules:
- Will route incoming calls to a destination that is based on the Dialed Number
- Extensions
- Voice Mail of Extension or Group
- Forwarding to outside number
- Fax Service
- Different destinations will be based on
Note: This will only add DIDs which do not follow the “Catch All” destination.
Adding DIDs:
- From Management Console, go to SIP Trunks, Your Trunk, then click DIDs Tab and click on Add DID Button
- Enter * + Last 6 DID Numbers
- Sample DID No.: 001 333 1234567
- Added DID No.: *234567
- To save new DID, just click on “OK”
Adding Inbound DID Rules:
- From Management Console, go to Inbound Rules and then click Add DID Rule
- Set the name for DID
- Pick DID from the Drop Down Menu
- Then Point to Destination
Outbound Rules:
- This is to allow and restrict called numbers
- To select SIP Trunks basing on the criteria (as indicated below)
- Destination number
- Originating internal extension
- Originating extension based on the Group Membership
- Length of the dialed number
Adding Outbound Rules:
- From Management Console, go to Outbound Rules and click Add
- Set the Name and Criteria
- Should start with Prefix: “0-9 and +”
- Setting Outbound routes
- There are 5 routes for the calls, the 2nd to 5th will be a backup and digits removed or added from each route.
Outbound Caller ID function:
- You need to ask your provider for the Right Outbound Caller ID Format to use
- Common EU formats: (this is to be used without spaces)
- +44 555 1234567
- 0044 555 1234567
- 49 555 1234567
- 0 555 1234567
- 555 1234567
- 1234567
- Common US formats: (this is to be used without spaces)
- +1 555 1234567
- 1 555 1234567
- 555 1234567
- 1234567
Here are some common set-up errors that you may encounter and which needs to be checked to resolve the problem.
- Outbound calls keeps dropping after 32 seconds
- Active SIP ALG – needs to disabled from the firewall
- Wrong Public IP address – needs to have the public IP address checked and replaced
- Firewall Check NOT Passed – needs to perform Firewall Check and have all points to be GREEN (Passed)
- One Way Audio Issue
- Firewall Check NOT Passed – needs to perform Firewall Check and have all points to be GREEN (Passed)
- Wrong Public IP address – needs to have the public IP address checked and replaced