Hi, I've been following this integration tutorial http://kb.asipto.com/asterisk:realtime:kamailio-4.0.x-asterisk-11.3.0-astdb and have a successful registration and I can even make calls through my asterisk box.

However what is unusual to me is that every time a phone registers with Kamailio, that is forwarded to Asterisk (as expected), yet Asterisk replies with 401 Unauthorized. Oddly enough the phone registers and can still make calls. What worries me is that as we scale to 100's of cps, this seemingly erroneous message may slow down Asterisk because it's trying to handle authentication for users which have already been authenticated by Kamailio. If this behavior is expected, then that would be good to know as well.

This is the sip debug from ASTERISK (I have replaced IP's with the names of the servers):

<--- SIP read from TCP:kamailio:41205 --->

Via: SIP/2.0/TCP kamailio;branch=z9hG4bK998f.2846e405000000000000000000000000.0

To: <sip:40081@asteriskIP>

From: <sip:40081@asteriskIP>;tag=32fda68bf54efeeb04e3edc67b53c63d-cfb0

CSeq: 10 REGISTER

Call-ID: 0005ce130bcee5c4-26538@kamailio

Max-Forwards: 70

Content-Length: 0

User-Agent: kamailio (4.3.0 (x86_64/linux))

Contact: <sip:40081@kamailio:5060>

Expires: 3600

<------------->

--- (11 headers 0 lines) ---

Sending to kamailio:5060 (no NAT)

<--- Transmitting (no NAT) to kamailio:5060 --->

SIP/2.0 401 Unauthorized

Via: SIP/2.0/TCP kamailio;branch=z9hG4bK998f.2846e405000000000000000000000000.0;received= kamailio

From: <sip:40081@asteriskIP>;tag=32fda68bf54efeeb04e3edc67b53c63d-cfb0

To: <sip:40081@asteriskIP>;tag=as404bac9a

Call-ID: 0005ce130bcee5c4-26538@ kamailio

CSeq: 10 REGISTER

Server: Asterisk PBX 11.6-cert2

Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH

Supported: replaces, timer

WWW-Authenticate: Digest algorithm=MD5, realm="asterisk", nonce="262b338e"

Content-Length: 0

<------------>

Scheduling destruction of SIP dialog '0005ce130bcee5c4-26538@ kamailio' in 32000 ms (Method: REGISTER)

Really destroying SIP dialog '0005ce130bcee5c1-26536@ kamailio' Method: REGISTER

=========================

sip.conf for kamailio trunk:

[kamailio-inbound]

type=friend

dtmfmode=auto

host=kamailioIP

allow=all

context=sipout

insecure=port,invite

canreinvite=no

========================

Asterisk version: 11.6-cert2

Kamailio version: 4.3

Benjamin Fitzgerald

LETS Corporation

(925) 235-1154

ben@letscorp.us

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