I am having issues with dialling a cirtain number (999) which is being routed to a SIP Carrier, all other calls work, but this fails everytime. What I am seeing when debugging ccsip calls are the following disconnect codes..
Disconnect Cause (CC) : 1
Disconnect Cause (SIP) : 404
Does anyone know what these are? I cannot find anything anywhere which tells me what these mean..
A SIP 404 is a generic error for failed to establish call (It can mean anything from "This number doesn't exist", to "You're not allowed to call this number (but it does exist)" to "System error making call")
As other numbers work, and this is a SIP trunk, you might want to check with your provider that they accept 999 calls.
Also check to ensure you're not digit stripping the leading "9" from outbound calls... Commonly "9" is used to identify an external call - and is stripped before being sent to the carrier. You may find that you're stripping the leading 9 and asking the SIP provider to dial "99" which will fail...
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