Home » Topics » Telecom Design » E1 versus ISDN PRI
My company is planning for E1 or ISDN PRI connectivity to our EPABX.Which is better ? What are the advantages of each?
1ISDN PRI=2,048Mbps=1E1=32x64Kbps telephone lines
as simple as that
E1_R2 = 30x64kpbs channels.This is Channel associated signaling.
E1_PRI= 31×64 kpbs channels with common channel signaling.
My query is with the regards to the features difference for the users.
E1 trunk is a transmission link. Can be used to interconnect 2 PABXes and provide Voice VPN between 2 sites.
PRI is an ISDN protocol that will run over E1. Normally PRI connects PABX to PSTN.
So in your case, if you PABX connects to PSTN, then it has to be PRI (but you will see that physically it looks the same as E1 interface).
But if you need to connect 2 PABXes in 2 diff locations, then use E1 trunk.
Number of channels wise is not important as they are similar and explained by the people above.
John. T. Mathai
Thanks that was a good explanation.
With PRI you get faster connection times and flexibility in deciding how many lines are for outgoing or incoming lines. If you can get PRI go for it.
That’s true , faster connection .Thanks
- The forum ‘Telecom Design’ is closed to new topics and replies.