Cisco PPTP VPN

R1(config)# conf t R1(config)# username aaron secret MyPassword Now we need to activate aaa new model to expose new commands: […]

UDLD Unidirectional Link Detection

UDLD (unidirectional link detection) is a supplementary protocol to Spanning tree protocol at Data link layer, before introducing UDLD, let’s […]

SIP trunk registration

Sip registration proxy   End-to-End Mode In the end-to-end mode, Cisco UBE collects the registrar details from the Uniform Resource […]

Call forwarding and Call transfer

In a VoIP network, getting an optimized system working for call transfer and forwarding requires the active cooperation of all […]