Working with a NEC switch. They send the initial INVITE to asterisk with a phantom NEC number in the From. NEC has told us they send the original caller id information as the From in an UPDATE packet.
>From what I have read, only headers in the INVITE are accessible. Is it >correct that we cannot retrieve SIP headers from this UPDATE packet (occurs >after the INVITE)? This system has to be chan_sip because blind transfers outside of asterisk work using chan_sip. When we looked at PJSIP blind transfers to switches a couple years ago, we found problems with the Asterisk PJSIP support. Have a great day! Dan
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