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SIP calls receive a fast busy signal
Solution ID
sk116739
Product
Security Gateway
Version
R77.30, R80.10
Date Created
06-Apr-2017
Last Modified
10-Jun-2019
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Symptoms
SIP calls receive a fast busy signal, since SIP session progress packets are not being NATed.
sipdebug kernel debug shows:
DATE TIME.PID... sip_ws_parser: Start parsing the SIP packet;
DATE TIME.PID... ws_parse_request_line: [WARNING]: Unknown method found in request;
DATE TIME.PID... ws_parse_request_line: [WARNING]: method SIP/2.0 is unknown to parser;
DATE TIME.PID... ws_parse_proto_version: [WARNING]: request parsing failed due to a malformed HTTP protocol name:;
DATE TIME.PID... ws_parse_proto_version: [WARNING]: expected: 'H', received: 'S';
DATE TIME.PID... ws_parse_proto_version: [WARNING]: request parsing failed due to a malformed HTTP protocol name:;
DATE TIME.PID... ws_parse_proto_version: [WARNING]: expected: 'H', received: 'e';
DATE TIME.PID... ws_parse_proto_version: [WARNING]: request parsing failed due to a malformed HTTP protocol name:;
DATE TIME.PID... ws_parse_proto_version: [WARNING]: expected: 'H', received: 's';
DATE TIME.PID... ws_parse_proto_version: [WARNING]: request parsing failed due to a malformed HTTP protocol name:;
DATE TIME.PID... ws_parse_proto_version: [WARNING]: expected: 'H', received: 'i';
DATE TIME.PID... ws_parse_proto_version: [WARNING]: request parsing failed due to a malformed HTTP protocol name:;
DATE TIME.PID... ws_parse_proto_version: [WARNING]: expected: 'H', received: 'o';
DATE TIME.PID... ws_parse_proto_version: [WARNING]: request parsing failed due to a malformed HTTP protocol name:;
DATE TIME.PID... ws_parse_proto_version: [WARNING]: expected: 'H', received: 'n';
DATE TIME.PID... ws_parse_request_line: [WARNING]: request parsing failed due to a malformed HTTP version;
DATE TIME.PID... sip_ws_parser: Parsing failed!;
DATE TIME.PID... sip_run_parser: Generic parsing failed
Cause
Security gateway cannot parse these messages and as a result cannot translate the content, that is why the busy signal is received
