Vonage API Help Center Vonage API Help Center

SIP

Why does my SIP endpoint rejects the call with SIP 403 Forbidden?
Symptom When forwarding a call in my Vonage number to my SIP URI, the ca...
No Audio In Programmable SIP IVR
Symptom An issue was happening for a user of the Voice API where no audi...
Does Vonage support Digest Authentication for inbound calls to a SIP endpoint?
Question Can I use Digest Authentication for inbound SIP calls? Applies ...
Is SIP REFER supported?
Question Can I transfer calls using SIP REFER? Applies To SIP REFER Voi...
How to Create a Redundant SIP-Forwarding Configuration
Objective Creating a redundant SIP-forwarding configuration in my Vonage...
Special Characters in Forward to SIP Address
Question Can I include _ or - within the SIP Address? Applies To Specia...
What does xxx SIP call status mean?
Question What do the various SIP call statuses mean? Applies To SIP Err...
Can I call emergency services using Vonage SIP Trunking?
Question Is it possible to dial emergency services such as 999 or 911 us...
How can I connect a soft phone with Vonage SIP trunk to make outbound calls?
Objective Connecting a soft client with Vonage SIP trunk to make outboun...