[Asterisk-Users] E1/T1 back to back ??

[Chris A. Icide]

On 07:46 PM 3/13/2005, Brett, Gary wrote:
 >
 >
 >Hi there
 >
 >Just a quick question, I will be building some servers in a lab utilizing
 >Digium E1 cards. I would like if possible to avoid the expense of installing
 >an e1/ISDN30 in my lab. I have two questions really, first does anybody know
 >of an effective simulation tool I can use to replicate a real world PRI but
 >without the telco line being installed. And secondly, can I have a scenario
 >with 2 asterisk servers with digium e1 cards 'back to back' one configured
 >as the network side and the other configured as the client side (can I just
 >use a single cat5 straight through cable between them ?? and cant the Digium
 >e1 cards operate ok in both modes?)
 >
 >Any advice would be greatly appreciated

Yes, you can connect two asterisk systems together back to back using t1/e1 
interfaces.  You will need a T1 crossover cable (do a google on T1 
Crossover).  Make sure you set signalling to net and cpe (if using pri 
signalling).