hi list , I am trying to connect openser with asterisk, but when I make calls to the pstn, it shows me a 407 Proxy Authentication Required , am trying to make groups of calls with openser that some extensions have permission of making calls to the pstn, others that alone they call internally and international. I have created 3 groups local, int, international, the extensions that are of the local group have permission I believe me, according to the theory to be able to make local calls,for this I am using asterisk, but this he throws me the message 407.

The extension 112 with the address ip 192.168.10.26 belongs to the local group, and he makes an intent of calling to the pstn through asterisk, but this he throws me the message 407 I don't know because

thank you for your help

+0.399494 192.168.10.26:5060 -> 192.168.10.1:5060
INVITE sip:2642006@192.168.10.1;user=phone SIP/2.0 
Via: SIP/2.0/UDP 192.168.10.26:5060;branch=z9hG4bKb7bfb742a0e47ab4 
From: "Ventas" <sip:112@192.168.10.1;user=phone>;tag=ca46913c384c257c 
To: <sip:2642006@192.168.10.1;user=phone> 
Contact: <sip:112@192.168.10.26:5060;transport=udp;user=phone> 
Supported: replaces, timer, path 
Call-ID: fb973f9069a09ad7@192.168.10.26 
CSeq: 59632 INVITE 
User-Agent: Grandstream GXP2000 1.1.5.15 
Max-Forwards: 70 
Allow: INVITE,ACK,CANCEL,BYE,NOTIFY,REFER,OPTIONS,INFO,SUBSCRIBE,UPDATE,PRACK,MESSAGE 
Content-Type: application/sdp 
Content-Length: 382 

v=0 
o=112 8000 8000 IN IP4 192.168.10.26 
s=SIP Call 
c=IN IP4 192.168.10.26 
t=0 0 
m=audio 5004 RTP/AVP 0 18 3 2 99 9 4 101 
a=sendrecv 
a=rtpmap:0 PCMU/8000 
a=rtpmap:18 G729/8000
 
a=rtpmap:3 GSM/8000 
a=rtpmap:2 G726-32/8000 
a=rtpmap:99 iLBC/8000 
a=fmtp:99 mode=20 
a=rtpmap:9 G722/16000 
a=rtpmap:4 G723/8000 
a=ptime:20 
a=rtpmap:101 telephone-event/8000 
a=fmtp:101 0-11 

#
U +0.000205 192.168.10.1:5060 -> 192.168.10.26:5060
SIP/2.0 407 Proxy Authentication Required 
Via: SIP/2.0/UDP 192.168.10.26:5060;branch=z9hG4bKb7bfb742a0e47ab4 
From: "Ventas" <sip:112@192.168.10.1;user=phone>;tag=ca46913c384c257c 
To: <sip:2642006@192.168.10.1;user=phone>;tag=d7e793d797690be5ce5420203095040f.2cd4 
Call-ID: fb973f9069a09ad7@192.168.10.26 
CSeq: 59632 INVITE 
Proxy-Authenticate: Digest realm="192.168.10.1", nonce="48802341954eb0c26cd5eb2dd85f375325fb4a7d", qop="auth" 
Server: OpenSER (1.3.2-notls (i386/linux)) 
Content-Length: 0