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| Aastra | Alert-Info: info=alert-autoanswer |
| Grandstream | Call-Info:\\; answer-after=0 |
| Linksys | Call-Info:\\; answer-after=0 |
| Polycom | Alert-Info: Ring Answer |
| Snom | Call-Info:\\; answer-after=0 |
| Snom - newer firmware | Call-Info: <sip:1923192.168.1.1>\;answer-after=0 |
| IP address must be correct | |
| Yealink | Call-Info:\; answer-after=0 |
...