REGISTER 12 headers, 0 lines
Reliably Transmitting (no NAT) to 212.144.96.86:5060:
REGISTER sip:0341.sip.arcor.de SIP/2.0
Via: SIP/2.0/UDP 192.168.100.1:5060;branch=z9hG4bK474e7f85;rport
From: <sip:03412408715@0341.sip.arcor.de>;tag=as396ce23b
To: <sip:03412408715@0341.sip.arcor.de>
Call-ID: 5109c19504bd9cff10dae66908905bbc@192.168.100.1
CSeq: 102 REGISTER
User-Agent: Asterisk PBX
Max-Forwards: 70
Expires: 120
Contact: <sip:03412408715@192.168.100.1>
Event: registration
Content-Length: 0


---

<--- SIP read from 212.144.96.86:5060 --->
SIP/2.0 401 Unauthorized
Via: SIP/2.0/UDP 192.168.100.1:5060;received=88.74.158.67;branch=z9hG4bK474e7f85;rport=22548
From: <sip:03412408715@0341.sip.arcor.de>;tag=as396ce23b
To: <sip:03412408715@0341.sip.arcor.de>;tag=SDj608a99-6756aeab
Call-ID: 5109c19504bd9cff10dae66908905bbc@192.168.100.1
CSeq: 102 REGISTER
Server: SSW/0.0.0
WWW-Authenticate: Digest realm="arcor.de",nonce="4732e56540490b84a469fe62a1798542efb669f6",algorithm=MD5
Contact: <sip:.iIiIiI.52521118.@82.82.16.8>
Content-Length: 0


<------------->
--- (10 headers 0 lines) ---
Responding to challenge, registration to domain/host name 0341.sip.arcor.de
REGISTER 13 headers, 0 lines
Reliably Transmitting (no NAT) to 212.144.96.86:5060:
REGISTER sip:0341.sip.arcor.de SIP/2.0
Via: SIP/2.0/UDP 192.168.100.1:5060;branch=z9hG4bK337bfc27;rport
From: <sip:03412408715@0341.sip.arcor.de>;tag=as339a5112
To: <sip:03412408715@0341.sip.arcor.de>
Call-ID: 5109c19504bd9cff10dae66908905bbc@192.168.100.1
CSeq: 103 REGISTER
User-Agent: Asterisk PBX
Max-Forwards: 70
Authorization: Digest username="...", realm="arcor.de", algorithm=MD5, uri="sip:0341.sip.arcor.de", nonce="...", response="...", opaque=""
Expires: 120
Contact: <sip:03412408715@192.168.100.1>
Event: registration
Content-Length: 0