SIP Release Codes and Causes
The CDR Diagnostic contains the following fields, among others:
Release Code: SIP code
Release Cause: the reason for a release code
Release Causes
Release Causes are local to 46 Labs and can come from either the Traffic Switch or the Traffic Manager.
From the Traffic Switch:
SIP Code / Release Code | Release Cause | Description |
(18X/2XX) | BLOCK_SDP_RFC1918_IP | Blocked due to use of a private IP. (i.e. can't reach internet) |
(18X/2XX) | BLOCK_SDP_ORIG_WRONG_PORT | Blocked due to customer's port not matching the trunk group port. (For example: TG is set up for 5060, customer set up for 5061) |
(18X/2XX) | BLOCK_SDP_TERM_WRONG_PORT | Blocked due to vendor's port not matching the trunk group port. (For example: TG is set up for 5060, vendor set up for 5061) |
(18X/2XX) | BLOCK_SDP_HAS_NO_CODECS | Blocked due to the sending party sending signaling with no codec identified in the SDP. |
(200) | BLOCK_CANCEL_AFTER_200 | The customer's party canceled the call after the 200 OK. (i.e. race condition) |
(200) | NORMAL_CLEARING | Normal/good call. |
(200) | HANGUP_BY_SUSPENSION | Call hungup due to the Trunk Group Balance/Payment "Kill Calls on Suspension" feature. |
(403) | VENDOR_403 | The owner of number does not have the TF/DID programmed into the switch. (i.e. downstream vendor 403) |
(404) | VENDOR_404 | The vendor is indictating that the number is not valid. |
(408) | LOCAL_PDD_TIMEOUT | PDD timed out before the call was able to connect between vendors. |
(408) | PDD_TIMEOUT | PDD timed out. |
(408) | REMOTE_PDD_TIMEOUT | PDD timeout returned by a vendor. (i.e. exceeded their PDD) |
(428) | VENDOR_428 | The server policy requires an Identity header and one has not been provided. |
(436) | VENDOR_436 | Bad Identity-Info - The request has an Identity-Info header, and the URI scheme in that header cannot be dereferenced. |
(437) | VENDOR_437 | Unsupported Certificate -Â The server was unable to validate a certificate for the domain that signed the request. |
(438) | VENDOR_438 | Invalid Identity Header -Â The server obtained a valid certificate that the request claimed was used to sign the request, but was unable to verify that signature. |
(484) | ADDRESS_INCOMPLETE | Request-URI is incomplete. (i.e. the number is not formatted correctly) |
(486) | NUMBER_BUSY | The callee is busy. |
(487) | ORIGINATOR_CANCEL | The request has terminated by bye. |
(487) | 200_AFTER_CANCEL | The request has terminated by cancel. |
(4XX/5XX/6XX) | ROUTE_REJECT | The call details state a rejection/404/etc in or during routing. |
(4XX/5XX/6XX) | CARRIER_REJECT | An intermediary machine or process rejected the call attempt. This contrasts with the 607 (Unwanted) SIP response code in which the called party rejected the call. The response may include the contact entities that blocked the call in Call-Info header containing. This provides a remediation mechanism for legal callers that find their calls blocked. |
(500) | NO_OUT_SOCKET | The IP assigned is not available. |
(503) | CALL_FAILURE | A server is undergoing maintenance or is temporarily overloaded and so cannot process the request. A "Retry-After" header field may specify when the client may reattempt its request. (i.e. service unavailable) |
(504) | VENDOR_504 | The server attempted to access another server in attempting to process the request, and did not receive a prompt response. (i.e. server timeout) |
(607) | VENDOR_607 | Unwanted -Â The called party did not want this call from the calling party. Future attempts from the calling party are likely to be similarly rejected. |
(608) | VENDOR_608 | Rejected -Â An intermediary machine or process rejected the call attempt. This contrasts with the 607 (Unwanted) SIP response code in which the called party rejected the call. The response may include the contact entities that blocked the call in Call-Info header containing. This provides a remediation mechanism for legal callers that find their calls blocked. |
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From the Traffic Manager:
SIP Code / Release Code | Release Cause | Description |
(Depends on what the user will choose) | ANI_GLOBAL_BLOCK | The call is violating an ANI Global Block list rule. |
(Depends on what the user will choose) | ANI_ROUTEPLAN_BLOCK | The call is violating an ANI Routeplan Block list rule. |
(Depends on what the user will choose) | DNIS_GLOBAL_BLOCK | The call is violating a DNIS Global Block list rule. |
(Depends on what the user will choose) | DNIS_ROUTEPLAN_BLOCK | The call is violating a DNIS Routeplan Block list rule. |
(Depends on what the user will choose) | MEDIAIP_GLOBAL_BLOCK | The call is violating a Media IP Global Block list rule. |
(Depends on what the user will choose) | MEDIAIP_ROUTEPLAN_BLOCK | The call is violating a Media IP Routeplan Block list rule. |
(Depends on what the user will choose) | 404_GLOBAL_BLOCK | The call is violating a 404 Global Block list rule. |
(Depends on what the user will choose) | 404_ROUTEPLAN_BLOCK | The call is violating a 404 Routeplan Block list rule. |
(Depends on what the user will choose) | EX_ROUTING_BLOCK | The call is violating a (external) block list rule. |
(503) | ISUP_OLI_BLOCK | ISUP-OLI block (to block payphones) |
(503) | ANI_SD_BLOCK | Blocked due to the "Short Duration" Intelligent Filter found in Routeplan Options. (Relationship > Routing > Create > Intelligent Filters) |
(503) | ANI_487_BLOCK | Blocked due to the "487" Intelligent Filter found in Routeplan Options. (Relationship > Routing > Create > Intelligent Filters) |
(503) | ANI_PRV_BLOCK | Blocked due to the "ANI PRV" Intelligent Filter found in Routeplan Options. (Relationship > Routing > Create > Intelligent Filters) |
(503) | ANI_BLOCK_ACD | Blocked due to the "Minimum ANI ACD" Intelligent Filter found in Routeplan Options. (Relationship > Routing > Create > Intelligent Filters) |
(503) | ANI_BLOCK_ASR | Blocked due to the "Minimum ANI ASR" Intelligent Filter found in Routeplan Options. (Relationship > Routing > Create > Intelligent Filters) |
(503) | DEST_PRV_BLOCK | Blocked due to the "Dest. PRV" Intelligent Filter found in Routeplan Options. (Relationship > Routing > Create > Intelligent Filters) |
(503) | NO_CUSTOMER_DECK | There is no ratedeck assigned to customer trunk group. |
(503) | NO_VENDOR_DECK | There is no ratedeck assigned to vendor trunk group. |
(503) | EMPTY_TG_LIST | There are no assigned IPs in the trunk group. |
(503) | MAX_RATE | Due to exceeding amount entered into the Maximum Rate field found in Routeplan Options. (Relationship > Routing > Create) |
(503) | NEPR | The call failed due to not having enough profitable routes. |
(503) | LERG_NOT_FOUND | The switch is unable to find the NPANXX in the LERG. |
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Release Code/SIP Code
Similar to HTTP, SIP (Session Initiation Protocol) is based on request and response transactions. Every transaction consists of a SIP request and (at least) one SIP response. For more information, please refer directly to RFC 3621Â or the assignment list from the Internet Assigned Numbers Authority (IANA).