For IP Office R11.1.3 and higher, the following ciphers are supported.
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Set
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Ciphers
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Set A
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Note: This set is not supported on IP500 V2 systems.
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TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
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TLS_DHE_RSA_WITH_AES_256_GCM_SHA384
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TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256
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TLS_DHE_RSA_WITH_AES_128_GCM_SHA256
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TLS_ECDH_RSA_WITH_AES_256_GCM_SHA384
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TLS_RSA_WITH_AES_256_GCM_SHA384
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TLS_ECDH_RSA_WITH_AES_128_GCM_SHA256
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TLS_RSA_WITH_AES_128_GCM_SHA256
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Set B
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This set is included for backwards compatibility.
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TLS_DHE_RSA_WITH_AES_256_CBC_SHA
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TLS_DHE_RSA_WITH_AES_128_CBC_SHA
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TLS_DHE_RSA_WITH_AES_256_CBC_SHA256
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TLS_DHE_RSA_WITH_AES_128_CBC_SHA256
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TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA
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TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA
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TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384
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TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256
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When the IP Office is acting as a TLS server, the H.323 Security Level and SIP Security Level setting operate as follows:
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If set to Medium, the IP Office supports cipher sets A and B.
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If set to High, the IP Office supports cipher set A.
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When the IP Office is acting as a TLS client:
