Thanks propcgamer for the effort, unfortunately the first is the same Sunrocket firmware I already have and it won't accept the second. Watching from a telnet session it states the image ID doesn't match. Makes me wonder if there's a lock of sorts to prevent cross flashing between customised versions for different providers.
I figured out how to turn on debugging mode and realised that it actually IS trying to connect to my provider, but I'm getting back a "403 Unauthorised". Here's what the packets look like modified to remove my actual username.
Does this give any hints? I thought perhaps NAT was an issue seeing 192.168.1.105 in here, however did try connecting directly to my cable modem eliminating that variable with the same results.
[32359 ch 0]
***ch1: my_auth() ***
[32359] qalloc(pak_send)=94
[32359] -----------------------------------------------
[32359] sendto(72.2.6.230:5060)=587=REGISTER sip:hysma.ca SIP/2.0 (708)
[32359]
REGISTER sip:hysma.ca SIP/2.0
Via: SIP/2.0/UDP 192.168.1.105:5060;branch=z9hG4bKc0a801695060-524688;rport
From: sip:username@hysma.ca;tag=C0A8016913C4-803FD1441
To: sip:username@hysma.ca
Call-ID: 1-803fd144-99113a73@192.168.1.105
CSeq: 708 REGISTER
User-Agent: InnoMedia SIP MTA6328-2Re v3.0.79
Contact: "username"
Expires: 60
Authorization: Digest username="username",realm="hysma.ca",uri="sip:hysma.ca"
,nonce="64f69b5c",algorithm=MD5,opaque="",response="01e631f32ff419bf77b808c42bcb
4ad1"
Max-Forwards: 70
Content-Length: 0
[32359]
[32359] -----------------------------------------------
[32439] -----------------------------------------------
[32439] recvfrom(72.2.6.230:5060)=417=SIP/2.0 100 Trying
[32439]
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.1.105:5060;branch=z9hG4bKc0a801695060-524688;received=1
92.168.1.105;rport=5060
From: sip:username@hysma.ca;tag=C0A8016913C4-803FD1441
To: sip:username@hysma.ca
Call-ID: 1-803fd144-99113a73@192.168.1.105
CSeq: 708 REGISTER
User-Agent: AcroVoice
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO
Supported: replaces
Content-Length: 0
[32439] -----------------------------------------------
[32439] matched 100 response to request: REGISTER sip:hysma.ca SIP/2.0...(Cseq=7
08)
[32439] -----------------------------------------------
[32439] recvfrom(72.2.6.230:5060)=446=SIP/2.0 403 Forbidden (Bad auth)
[32439]
SIP/2.0 403 Forbidden (Bad auth)
Via: SIP/2.0/UDP 192.168.1.105:5060;branch=z9hG4bKc0a801695060-524688;received=1
92.168.1.105;rport=5060
From: sip:username@hysma.ca;tag=C0A8016913C4-803FD1441
To: sip:username@hysma.ca;tag=as0840aebe
Call-ID: 1-803fd144-99113a73@192.168.1.105
CSeq: 708 REGISTER
User-Agent: AcroVoice
Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO
Supported: replaces
Content-Length: 0
[32439] -----------------------------------------------
[32444] matched 403 response to request: REGISTER sip:hysma.ca SIP/2.0...(Cseq=7
08)
[39444] UA[1]=username (re)REGISTERing to proxy[0]=callcentre.hysma.ca:5060..
.
[39444] qalloc(pak_send)=95
[39444] -----------------------------------------------
[39444] sendto(72.2.6.230:5060)=420=REGISTER sip:hysma.ca SIP/2.0 (709)
[39444]
REGISTER sip:hysma.ca SIP/2.0
Via: SIP/2.0/UDP 192.168.1.105:5060;branch=z9hG4bKc0a801695060-524689;rport
From: sip:username@hysma.ca;tag=C0A8016913C4-803FD1441
To: sip:username@hysma.ca
Call-ID: 1-803fd144-99113a73@192.168.1.105
CSeq: 709 REGISTER
User-Agent: InnoMedia SIP MTA6328-2Re v3.0.79
Contact: "username"
Expires: 60
Max-Forwards: 70
Content-Length: 0