Security requirements

Last Updated : Jun 29, 2022 |

The Teams SIP signaling is set up to use TLS port 5061. For security reasons, the TLS version must be TLS 1.2.

Teams requires the use of the following ECC ciphers:

  • TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384

  • TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256

  • TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA384

  • TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA256

Avaya SBC, working with Teams, supports SRTP interworking with RTP/RTCP on the PSTN side and SRTP/SRTCP with a lifetime for the following cryptography suites:

  • AES_CM_128_HMAC_SHA1_80

  • AES_CM_128_HMAC_SHA1_32

  • AES_CM_256_HMAC_SHA1_80

  • AES_CM_256_HMAC_SHA1_32