[SR-Users] Interconnect with Zoom

[Fred Posner]

On 3/11/22 08:32, Matthias Urlichs wrote:
> I've since figured out that the solution to my problem is to radically 
> limit the crypto algorithms (offered to them *and* accepted from them) 
> via SDP. Apparently there's a somewhat-hairy bug in their gateway's 
> negotiation setup.

Sounds similar to five 9, cube, and some others...

Horrible rtpengine statements, such as:
SDES-no-AES_CM_128_HMAC_SHA1_32 SDES-no-AES_192_CM_HMAC_SHA1_80 
SDES-no-AES_192_CM_HMAC_SHA1_32 SDES-no-AES_192_CM_HMAC_SHA1_80 
SDES-no-AES_256_CM_HMAC_SHA1_80 SDES-no-AES_256_CM_HMAC_SHA1_32 
SDES-no-F8_128_HMAC_SHA1_80 SDES-no-F8_128_HMAC_SHA1_32 
SDES-no-NULL_HMAC_SHA1_80 SDES-no-NULL_HMAC_SHA1_32

Fred Posner | palner.com
Matrix: @fred:matrix.lod.com
o: +1 (212) 937-7844