[asterisk-users] connecting 1.2 and 1.4 using SIP

[Jerry Geis]

Is there something special in connecting a 1.2 and 1.4 systems???
I have connected a number of 1.2 systems using SIP between them and had 
no issue.
In this case I am getting "407 Proxy Authentication Required"

I did the same steps I did for 1.2

Basically I have entries in sip.conf on both machines with the IP 
pointing to each other.

[x_to_y]
type=friend
username=x_to_y
secret=yes
host=25.x.x.x
context=x_to_y
allow=ulaw
allow=alaw

<--- Reliably Transmitting (no NAT) to 25.x.x.x:5060 --->
SIP/2.0 407 Proxy Authentication Required^M
Via: SIP/2.0/UDP 
25.x.x.x:5060;branch=z9hG4bK7d55a70d;received=25.x.x.x;rport=5060^M
From: "528 528" <sip:528 at 25.x.x.x>;tag=as7855961b^M
To: <sip:59 at 192.168.1.59>;tag=as0ab59997^M
Call-ID: 19cf6bb2489f81bc765e5d194e121348 at 25.x.x.x^M
CSeq: 102 INVITE^M
User-Agent: Asterisk PBX^M
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY^M
Supported: replaces^M
Proxy-Authenticate: Digest algorithm=MD5, realm="asterisk", 
nonce="49cd7fc3"^M
Content-Length: 0^M

THanks,

Jerry