This is my network scenario:-a DSL access to the Internet that works properly.-a PBX based on Asterisk and many Ip-phones. The signaling protocol used is SIP.-a SIP account to a SIP Proxy on the Internet. In this way the PBX could receive incoming ca...

Hi,I've bought a Sip account from a Voip Service Provider with the following parameters:1- Registrar server Ip address,port.2- Sip User account.3- Password.4- Realm.Which platforms and IOS support this type of authentication?Cisco 827 -4v support thi...