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403 Forbidden on REFER on trunk between CUCM and VG310

Joseph Lombardo
Level 1
Level 1

SIP trunk between CUCM 12.5 and VG310

In and out bound calls are working to FXS ports on VG310 using SIP dial peers

When VG310 port does a hook flash transfer VG310 sends a REFER then CUCM sends FORBIDDEN

 

I am not sure why it I am getting the 403 message.  If I call the same number I am transferring to directly from the port the call goes through.  Why would I get a 403 on transfer?

 

Thanks

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