--- (14 headers 14 lines)---
Using INVITE request as basis request - 69e248b35cd6196a7405393f5f3d2d22@10.9.0.17
Sending to 10.9.0.17 : 5060 (NAT)
Found peer 'ch'
Reliably Transmitting (no NAT) to 10.9.0.17:5060:
SIP/2.0 407 Proxy Authentication Required
Via: SIP/2.0/UDP 10.9.0.17:5060;branch=z9hG4bK703203a9;rport;received=10.9.0.17
From: "401" <sip:401@10.9.0.17>;tag=as0658b342
To: <sip:202@10.0.0.252>;tag=as0e61ceda
Call-ID: 69e248b35cd6196a7405393f5f3d2d22@10.9.0.17
CSeq: 102 INVITE
User-Agent: Asterisk PBX
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY
Contact: <sip:202@10.0.0.252>
Proxy-Authenticate: Digest algorithm=MD5, realm="gel.kubkurort.ru", nonce="511a69e7"
Content-Length: 0


---
Scheduling destruction of call '69e248b35cd6196a7405393f5f3d2d22@10.9.0.17' in 15000 ms
asterisk1*CLI>
<-- SIP read from 10.9.0.17:5060:
ACK sip:202@10.0.0.252 SIP/2.0
Via: SIP/2.0/UDP 10.9.0.17:5060;branch=z9hG4bK703203a9;rport
From: "401" <sip:401@10.9.0.17>;tag=as0658b342
To: <sip:202@10.0.0.252>;tag=as0e61ceda
Contact: <sip:401@10.9.0.17>
Call-ID: 69e248b35cd6196a7405393f5f3d2d22@10.9.0.17
CSeq: 102 ACK
User-Agent: Asterisk PBX
Max-Forwards: 70
Content-Length: 0