I have MPLS IP VPN network and I'm configuring VoIP service using Cisco2801 and Siemens PBXs. Basic configuration is ok, i can establish VoIP calls. I have problems with cRTP and sRTP.When I configure cRTP or sRTP signalization is going on, telephone...

I'm using cisco2801 as IOS CA server.I'm generating exportable keys and when I issue sh crypto key mypubkey rsa I'm receivingXXX_YYY#sh crypto key mypubkey rsa% Key pair was generated at: 14:42:25 ZZZ/ Oct 24 2006Key name: cisco1 Usage: General Purpo...

I have fully mesh MPLS VPN and RIP between CE-PE routers. I neeed to establish ipsec traffic encryption in the network.What is best practise - to use GRE tunnels, DMVPN or if it is possible to avoid GRE tunnels

I have Cisco2801 with E1 controller connected to PBX.I have 6 IP location for voice and i'm using probe to monitor this sites for busyout.My problem is - when one location goes down complete E1 between PBX and router goes down. How to configure E1 do...

I have two different VPNs and I need to establish connection between them. But both of them are security sensitive customers, with very low router administration capabilities.What is the best way to resolve this issue?