Hold implementation, Reliability of provisional responses, Transfer – Polycom SIP 3.1 User Manual

Page 291: Third party call control

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Hold implementation, Reliability of provisional responses, Transfer | Third party call control | Polycom SIP 3.1 User Manual | Page 291 / 347 Hold implementation, Reliability of provisional responses, Transfer | Third party call control | Polycom SIP 3.1 User Manual | Page 291 / 347
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