I have a Polycom 601 setup with 4 different extensions one on each line button all going to the trixbox.
Line 1 registering and working fine
Line 2 registering and working fine
Line 3 registering and working fine
Line 4 not registering checked sip debug and receiving error 403 forbidden

I have been working on this for days and am stumped checked all the log in details and happening on more than one device.

Here is extract from my phone config file


reg.1.displayName="Reception"

        reg.1.address="700"

        reg.1.label="Line1"

        reg.1.auth.userId="700"

        reg.1.auth.password="XXXX"

        reg.1.lineKeys="1"

                                reg.1.server.1.address=""

                                reg.1.server.1.expires=""

                                reg.1.server.1.expires.lineSeize="30"

                                reg.1.server.1.port="5060"

                                reg.1.server.1.register="1"

                                reg.1.server.1.retryMaxCount=""

                                reg.1.server.1.retryTimeOut=""

                                reg.1.server.1.transport="DNSnaptr"

                                reg.1.server.2.transport="DNSnaptr"

                                reg.1.thirdPartyName=""

                                reg.1.type="private"

                                       

reg.2.displayName="Reception"

        reg.2.address="800"

        reg.2.label="Line2"

        reg.2.auth.userId="800"

        reg.2.auth.password="XXXX"

        reg.2.lineKeys="1"

                                reg.2.server.1.address=""

                                reg.2.server.1.expires=""

                                reg.2.server.1.expires.lineSeize="30"

                                reg.2.server.1.port="5060"

                                reg.2.server.1.register="1"

                                reg.2.server.1.retryMaxCount=""

                                reg.2.server.1.retryTimeOut=""

                                reg.2.server.1.transport="DNSnaptr"

                                reg.2.server.2.transport="DNSnaptr"

                                reg.2.thirdPartyName=""

                                reg.2.type="private"

 

reg.3.displayName="Reception"

        reg.3.address="720"

        reg.3.label="Line3"

        reg.3.auth.userId="720"

        reg.3.auth.password="XXXX"

        reg.3.lineKeys="1"

                                reg.3.server.1.address=""

                                reg.3.server.1.expires=""

                                reg.3.server.1.expires.lineSeize="30"

                                reg.3.server.1.port="5060"

                                reg.3.server.1.register="1"

                                reg.3.server.1.retryMaxCount=""

                                reg.3.server.1.retryTimeOut=""

                                reg.3.server.1.transport="DNSnaptr"

                                reg.3.server.2.transport="DNSnaptr"

                                reg.3.thirdPartyName=""

                                reg.3.type="private"

                                       

reg.4.displayName="Reception"

        reg.4.address="740"

        reg.4.label="Line4"

        reg.4.auth.userId="740"

        reg.4.auth.password="XXXX"

        reg.4.lineKeys="1"

                                reg.4.server.1.address=""

                                reg.4.server.1.expires=""

                                reg.4.server.1.expires.lineSeize="30"

                                reg.4.server.1.port="5060"

                                reg.4.server.1.register="1"

                                reg.4.server.1.retryMaxCount=""

                                reg.4.server.1.retryTimeOut=""

                                reg.4.server.1.transport="DNSnaptr"

                                reg.4.server.2.transport="DNSnaptr"

                                reg.4.thirdPartyName=""

                                reg.4.type="private"