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E1 versus ISDN PRI

Viewing 8 posts - 1 through 8 (of 8 total)
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  • #33448 Reply

    My company is planning for E1 or ISDN PRI connectivity to our EPABX.Which is better ? What are the advantages of each?

    #33449 Reply

    1ISDN PRI=2,048Mbps=1E1=32x64Kbps telephone lines

    as simple as that

    #33450 Reply
    Raghav rao

    E1_R2 = 30x64kpbs channels.This is Channel associated signaling.

    E1_PRI= 31×64 kpbs channels with common channel signaling.

    #33451 Reply

    My query is with the regards to the features difference for the users.

    #33452 Reply
    AnnChoon Pan

    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.

    #33453 Reply
    John. T. Mathai

    Thanks that was a good explanation.

    #33454 Reply
    Juan Holz

    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.

    #33455 Reply

    That’s true , faster connection .Thanks

Viewing 8 posts - 1 through 8 (of 8 total)
Reply To: E1 versus ISDN PRI
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