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  1. JDCre63

    SIP registration on a Grandstream GAC 2500 Conf unit

    Figured this out: what I didn't know was that the hosted IP/SIP PBx provider had all traffic on public port 5060 blocked as a security measure to keep the spammers/hackers at bay. Once I switch the public port to 5960 and set up the GS GAC 2500 for the same but kept the external routing to...
  2. JDCre63

    SIP registration on a Grandstream GAC 2500 Conf unit

    I am attempting to get a GS GAC 2500 SIP conference unit to register to a hosted SIP service provider. Unit is getting DHCP and ISP access locally from an on site router and I need to get it to register to an https://IP address. To me it should be just like registering a SIP handset/phone set...
  3. JDCre63

    Requesting help with testing an old Valcom VP-4024B power supply

    Only way I know of to test output on the old Valcom units is to get a volt meter and set it for the DC output range on the meter and apply the probes to the +/- outputs and read the meter.
  4. JDCre63

    SIP sets behind CISCO firewall connecting to public IP

    I installed a Yealink T48G on the end of a customers cable ISP connection without any router or firewall, programmed it properly and it came and worked. Problem became that anonymous SIP calls, strange non-user induced forwarding would occur, et., so I decided to install a CISCO RV042G router...
  5. JDCre63

    AM using Yealink T48 sets with a UC

    AM using Yealink T48 sets with a UCx50 that also has 2 dozen Nortel T-series sets. How does one program the T48 DSS keys for a PARK button and Transfer to VM button? JDCre63

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