Can I use voip to tunnel a voice T1 over an IP network?

philipshuman · ‎03-07-2008

We have two analog phone switches currently connected together via a point to point private T1 line. I would like to replace the T1 between the switches with a pair of Cisco routers and IP network connection (we have plenty of bandwidth for it). What Cisco hardware would I need and what would the configuration look like? Thanks!

dknov · ‎03-08-2008

Hi,

Two methods I am aware of for this case:

1. Circuit Emulation over IP (CEoIP)

Example: http://www.cisco.com/en/US/prod/collateral/routers/ps282/product_data_sheet09186a00802045f5_ps5854_Products_Data_Sheet.html

2. Transparent CCS (T-CCS)

Example:

http://www.cisco.com/en/US/tech/tk652/tk653/technologies_tech_note09186a00800a96c1.shtml#tccsmatrix

T-CCS is a more legacy one, but I have used it a few years back to interconnect two Avaya PBXes over WAN circuit.

HTH.

David

philipshuman · ‎03-08-2008

Thanks! I'll take a look!

paolo bevilacqua · ‎03-09-2008

Can I add something to the advice above. These methods are generally used for when the PBX protocols as so proprietary that regular VoIP doesn't work.

In 99.9% of the cases, you do a regular voip configuration that has many advantages over TCCS or CES, and everything works perfectly.