Failed 0 – Network issues from the call receiving end when no other code is applicable
Failed 1 – Call failed. Most likely the number is not in use or is an unallocated number ((On the softphone it will show up as SIP response 404)
Answered 16 – Call has been answered successfully
Busy 17 – User on the dialled number is busy ((On the softphone it will show up as SIP response 486)
Failed 18 – Thiscause is used when a called party does not respond to a call establishment message with either an alerting or connect indication within the prescribed period of time allocated ((On the softphone it will show up as SIP response 408)
No Answer 19 or Busy 19 – User is alerted but there is no response from the call recipient. This happens when the device is malfunctioning or some network issues that does not allow signalling to reach the network ((On the softphone it will show up as SIP response 480)
Failed 20 - Subscriber Absent. This cause value is used when a mobile station has logged off, radio contact is not obtained with a mobile station or if a personal telecommunication user is temporarily not addressable at any user-network interface. Sofia SIP will normally raise USER_NOT_REGISTERED in such situations ((On the softphone it will show up as SIP response 480)
Failed 21 - This cause indicates that the equipment sending this cause does not wish to accept this call, although it could have accepted the call because the equipment sending this cause is neither busy nor incompatible ((On the softphone it will show up as SIP response 603)
Failed 34 - This cause indicates that there is no appropriate circuit/channel presently available to handle the call (On the softphone it will show up as SIP response 503)
Failed 203 – No rates for User
Failed 204 – No suitable providers found
Failed 207 – Not clear who should receive call
Failed 210 – Balance more than 0, but not enough to make call
Failed 211 – Low balance for user or Daily limit is reached
Failed 212 – Balance too low for more simultaneous calls
Failed 219 – DID has reached call limit. No more calls allowed to this DID
Failed 220 – User call limit reached
Failed 221 – Device call limit reached
Failed 224 – Provider skipped because his rate is higher than user’s rate
Failed 225 – CallerID is banned
Failed 229 – DID is reserved
Failed 230 – Connection returned error code 0 instead of real code
Failed 239 – Device used its daily call time limit
Failed 240 – Provider belongs to the User which makes call (loop)
Failed 241 – Caller canceled the call before call was answered
Failed 246 – Duplicate call hangup
Failed 248 – Call was terminated because FAS(False Answer Supervision) control detected an issue
Failed 255 – Destination is in blacklist
Failed 256 – Destination is not in whitelist
Failed 257 – Calling Card expired
Failed 258 – Calling Card is not sold yet
Failed 259 – Calling Card is empty
Failed 260 – Destination is blocked in User’s Tariff
Failed 262 – Caller ID number is in blacklist
Failed 263 – Caller ID is not in whitelist
Failed 265 – Provider skipped because rate margin is lower than allowed
Failed 268 – PDD limit reached
Failed 269 – User’s call rate is higher than allowed
Failed 277 – CallerID is in Global Blacklist
Failed 278 – CallerID is not in Global Whitelist
Failed 279 – Destination number is in Global Blacklist
Failed 280 – Destination number is not in Global Whitelist
Failed 283 – Caller ID is in DID blacklist
Failed 284 – DID is closed
Failed 287 – Low balance for Device