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ATA 186 Authentication on GK

We are using GKTMP RRQ authentication. Normally

Cisco voice gateway sends H.235 CryptoToken

we can validate.

"Configuring the Cisco ATA 186" CCO document

in Security section says:

"This is a Cisco Proprietary H.235 implementation;

it uses the Cisco access/clear token structure

rather than the VocalTec crypto token structure."

GKTMP application receives the following string:

T={O:1.2.840.113548. G:ATA001 t:998069871 r:2 s:0942B21206FD99D711781816F425C8BE}

"T=" means clearToken, "s:" is a challengeString.

Actually the same string is sent by Cisco voice gateways in addition to normal "$=" CryproToken.

The question is: how to validate Cisco proprietary

access/clear token structure?


Re: ATA 186 Authentication on GK

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