Nortel-networks Mediant TP-1610 SIP Manuale Utente Pagina 157

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Mediant 2000 SIP User’s Manual 8. Gateway Capabilities Description
Version 4.4 157 July 2005
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”
At this time a new REGISTER request is issued with the 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]>
Server: Audiocodes-Sip-Gateway/TrunkPack 1610/v.4.20.299.412
CSeq: 1 REGISTER
Contact: sip:[email protected]:
Expires:3600
Authorization: Digest, Username: MP108-AudioCodes,
realm="audiocodes.com”,
nonce="11432d6bce58ddf02e3b5e1c77c010d2",
uri=”10.2.2.222”,
response=“ b9c45d0234a5abf5ddf5c704029b38cf”
On receiving this request, if accepted by the Proxy, the proxy returns a 200 OK response closing
the REGISTER transaction.
SIP/2.0 200 OK
Via: SIP/2.0/UDP 10.1.1.200
From: <sip: [email protected]>;tag=1c23940
To: <sip: [email protected]>
Cseq: 1 REGISTER
Date: Thu, 26 Jul 2001 09:34:42 GMT
Server: Columbia-SIP-Server/1.17
Content-Length: 0
Contact: <sip:[email protected]>; expires="Thu, 26 Jul 2001 10:34:42 GMT"; action=proxy;
q=1.00
Contact: <[email protected]:>; expires="Tue, 19 Jan 2038 03:14:07 GMT"; action=proxy;
q=0.00
Expires: Thu, 26 Jul 2001 10:34:42 GMT
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