Showing errors in kamailio syslogs for Register messages

Question

I am getting the below Error messages in syslog. Can anyone tell me why these two methods getting failed. Is there anything I am missing to configure in SIP phone.

ERROR: {1 2 REGISTER 619499693} [core/parser/parse_methods.c:456]: parse_methods(): Invalid method

ERROR: {1 2 REGISTER 619499693} [core/parser/parse_allow.c:65]: parse_allow_header(): bad allow body header

The captured register message below:

REGISTER sip:77.10.86.8;user=phone SIP/2.0

Via: SIP/2.0/UDP 77.10.86.9:5060;rport;branch=z9hG4bK1290987256

From: "USER1" sip:[email protected];user=phone;tag=822848271

To: "USER1" sip:[email protected];user=phone

Call-ID: 619499693

CSeq: 1 REGISTER

Contact: "USER1" sip:[email protected]:5060

Allow: INVITE, ACK, OPTIONS, BYE, CANCEL, UPDATE, INFO, SUBSCRIBER, NOTIFY, MESSAGE, PRACK, REFER

Max-Forwards: 70

User-Agent: eXosip/3.6.0

Expires: 3600

Supported: eventlist, replaces, tdialog, timer, 100rel

Allow-Events: dialog, message-summary, refer, reg, ua-profile

Content-Length: 0

Answer 1

The from and to headers do not comply with rfc3261 syntax:

From: "USER1" sip:[email protected];user=phone;tag=822848271
To: "USER1" sip:[email protected];user=phone

When a display name is used, the URI needs to be enclosed between <>

From: "USER1" <sip:[email protected];user=phone>;tag=822848271
To: "USER1" <sip:[email protected];user=phone>

You will find more details in rfc3261.

EDIT:

I was too fast in answering. The error mention a wrong value in Allow header. SUBSCRIBER (typo for SUBSCRIBE) is not defined by any specification. However, in rfc3261, such values (unknown) are allowed by the specification, and such header is correct from a syntax perspective.