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Communications Platform
SIP Trunking
Communications Platform Support
SIP Trunking
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General information
Which session interval timer should I use?
For what period can I request Call Detail Records?
What audio codecs are supported (Voice Management)?
What is a CDR, and where can I get it?
How do I send calls anonymously?
SIP INVITE Header format
How do I authenticate when setting up calls through a CM SIP Trunk?
How to blacklist or whitelist destinations (Voice Management)?
Is the T.38 Fax protocol supported?
Can I still connect when my system does not support REGISTER or DIGEST AUTH?
Is the CM Voice platform geo redundant?
What are Concurrent Channel and Calls Per Second limits?
Are calls supported via UDP & TCP?
Getting started
What IP subnet to whitelist SIP trunk
Why and when is a SIP account banned?
Help, my SIP Trunk is blocked! Why and what now?
How to configure a back-up trunk?
How to set up a SIP trunk in the Voice Management application?
How to create a SIP account?
CLI (Calling Line Identification)
What is a CLI?
Do I always have to send a valid CLI with a call?
Can I use a mobile number as CLI?
What phone number formats are supported?
DDI numbers
Cancel phone number subscription
Can I port my existing numbers to CM?
How do I order a new DDI number?
How do I configure a DDI for incoming calls?
Why are incoming calls to my numbers not working?
Integrations (PBX)
How to install a CM.com SIP trunk in 3CX?
How to integrate Asterisk PBX?
How to integrate Freeswitch PBX?
Pricing
How is SIP Trunking billed?
How are calls to Dutch premium numbers billed?
Which calls are surcharged with special rates?
How are calls to EU countries with a non-EU CLI billed?
Regulations
SIP Trunking - Regulations Australia (+61)
SIP Trunking - Regulations Belgium (+32)
SIP Trunking - Regulations China (+86)
SIP Trunking - Regulations France (+33)
SIP Trunking - Regulations Hong Kong (+852)
SIP Trunking - Regulations Japan (+81)
SIP Trunking - Regulations The Netherlands (+31)
SIP Trunking - Regulations New Zealand (+64)
SIP Trunking - Regulations Singapore (+65)
SIP Trunking - Regulations South Africa (+27)
SIP Trunking - Regulations Turkey (+90)
SIP Trunking - Regulations United Arabic Emirates (+971)
SIP Trunking - Regulations United Kingdom (+44)
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