Hewlett-Packard Mediant 2000 User's Manual
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Brand: HP
Category: Gateway
Type: Operation & user’s manual for HP Mediant 2000
Pages: 496 (6.06 Mb)
Version 5.8 439 October 2009
SIP User's Manual 9. IP Telephony Capabilities
• The realm return by the proxy is audiocodes.com.
• The password from the ini
• The equation to be evaluated is (according to RFC this part is called A1)
file is AudioCodes.
• The MD5 algorithm is run on this equation and stored for future usage.
‘122:audiocodes.com:AudioCodes’.
• The result is ‘a8f17d4b41ab8dab6c95d3c14e34a9e1’.
5. Next, the par called A2 needs to be evaluated:
• The method type is ‘REGISTER’.
• Using SIP protocol ‘sip’.
• Proxy IP from ini
• The equation to be evaluated is
file is ‘10.2.2.222’.
• The MD5 algorithm is run on this equation and stored for future usage.
‘REGISTER:sip:10.2.2.222’.
• The result is ’a9a031cfddcb10d91c8e7b4926086f7e’.
6. Final stage:
• The A1 result: The nonce from the proxy response is
‘11432d6bce58ddf02e3b5e1c77c010d2’.
• The A2 result: The equation to be evaluated is
• The MD5 algorithm is run on this equation. The outcome of the calculation is the
response needed by the device to register with the Proxy.
‘A1:11432d6bce58ddf02e3b5e1c77c010d2:A2’.
• The response is ‘b9c45d0234a5abf5ddf5c704029b38cf’.
At this time, a new REGISTER request is issued with the following response:
REGISTER sip:10.2.2.222 SIP/2.0
Via: SIP/2.0/UDP 10.1.1.200
From: <sip: [email protected]>;tag=1c23940
To: <sip: [email protected]>
Call-ID: [email protected]
Server: Audiocodes-Sip-Gateway/Mediant 2000/v.5.40.010.006
CSeq: 1 REGISTER
Contact: sip:[email protected]:
Expires:3600
Authorization: Digest, username: 122,
realm="audiocodes.com”,
nonce="11432d6bce58ddf02e3b5e1c77c010d2",
uri=”10.2.2.222”,
response=“b9c45d0234a5abf5ddf5c704029b38cf”
7. Upon receiving this request and if accepted by the Proxy, the proxy returns a 200 OK
response closing the REGISTER transaction: