Couple of questions. What is your provider type (POTS, SIP, GSM Gateway, etc)? Does it depend on what type of line the caller is calling on (landline, cell, SIP, etc)? Has it ever worked or has this always occurred? What firmware are you on? If you forward it to a landline or cell on a different provider does it work?
im receive the uc320w on Friday. I have only a SIP Account configured. No FXO, FXS or WiFi
The Firmware is the last one 2.2.2(1) The Phone i have is an SPA502G
Im tested to both side. If you call from a cell to Sip with a forward to a cell again or if you call from landlane to sip and forward them to the cell. Line is comming up on the cell, but you have no tone to both side.
Bevor im changing to the uc320w they was working with an other solution. The config was the same. So seems not to be the sip provider.
Couple more questions. Who is your SIP provider? If you change the forwarded number to a landline number does it work? When you get the call on the cell what is the Caller ID? Does it show the UC's number or the original caller?
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