3Com VCX V7122 User Manual page 161

"M2K-3Com:3Com.com:3Com".
The MD5 algorithm is run on this equation and stored for future usage.
The result is: "a8f17d4b41ab8dab6c95d3c14e34a9e1"
Next we need to evaluate the par called A2. We take:
The method type "REGISTER"
Using SIP protocol "sip"
Proxy IP from ini file "10.2.2.222"
The equation to be evaluated:
"REGISTER:sip:10.2.2.222".
The MD5 algorithm is run on this equation and stored for future usage.
The result is:"a9a031cfddcb10d91c8e7b4926086f7e"
The final stage:
The A1 result
The nonce from the proxy response: "11432d6bce58ddf02e3b5e1c77c010d2"
The A2 result
The equation to be evaluated:
"A1:11432d6bce58ddf02e3b5e1c77c010d2:A2".
The MD5 algorithm is run on this equation. The outcome of the calculation is the
response needed by the gateway to be able top register with the Proxy.
The response is: "b9c45d0234a5abf5ddf5c704029b38cf"
3Com VCX V7122 SIP VoIP Gateway User Manual 161