Dear All,   We know that NIM-4BRI-S/T can be used to provide data connectivity to legacy ISDN networks but what about NIM-4BRI-NT/TE? it seems it support voice only and doesn't need external NT1 terminal. My question: Can I use NIM-4BRI-NT/TE to ma...

Dear All,I have a prolem in a router 1841 so I cahnged the flash and the RAM but the problem still appear, every time go to rommon!! I changed the registry to default ( 0x2102 ) and problem still appear !!I went to cookie and make sure from the HEX n...

Dear all, We have a cisco router 2811 so it has 2 IOS one is default IP- base and the other is  c2800nm-ipbasek9-mz.124-20.T1 to support the E1-PRI card.The router working fine then anfter 2-5 hours the service go down and after we access by Hyper te...

Dear Sir,There is many cisco products, so sometime I don't know for what this product use? Does Cisco has a link in its website explain for example:- Cisco router 1841 used for connecting more than one network and do NAT funtion see the diagram below...

Dear Sirs,I have an E1 (PRI) in the main office for a certain company so there are 25 branch belong to this company.I want to know what I need of the HW and configuration to let the branches call the main office through this E1 and the cost will be c...