FXO Trunks or PRI solutions?

Answered Question
Sep 22nd, 2010

FXO Trunks or PRI solutions for small office of 15 or less users?

What ISR and switch to use? CUE for Voicemail? how about faxing?

I have this problem too.
0 votes
Correct Answer by Aaron Harrison about 6 years 2 months ago

Hi

Quite possibly; it depends on your SP's pricing and your usage.

That's why I suggest BRI (2 channels per circuit) rather then FXO; far more reliable and with much better quality.


Regards

Aaron

Correct Answer by Aaron Harrison about 6 years 2 months ago

Hi

PRI if the users are busy enough on the phones to warrant the minimum number of channels you are allowed to order (it varies depending on provider).

BRI if you only need a few channels or PRI is too expensive.

FXO if you absolutely can't use anything else - try seaching the forums for FXO voice quality, FXO disconnect supervision, FXO answer supervision to get a sample of some of the problems you are likely to hit. Even if all goes well, FXOs generally have notably lower voice quality.

Regards

Aaron

Please rate helpful posts..

Correct Answer by dijohn about 6 years 2 months ago

PRI if thats on the table. Easy to debug

PRI also gives you the flexibility to provision just the needed lines. like you could probably take  a 4 lines on your PRI and just use those channels.

Config wise and debug wise PRI is easier. Personal Troubleshooting experience

2811?

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (5 ratings)
Loading.
Correct Answer
dijohn Wed, 09/22/2010 - 22:25

PRI if thats on the table. Easy to debug

PRI also gives you the flexibility to provision just the needed lines. like you could probably take  a 4 lines on your PRI and just use those channels.

Config wise and debug wise PRI is easier. Personal Troubleshooting experience

2811?

Correct Answer
Aaron Harrison Thu, 09/23/2010 - 00:38

Hi

PRI if the users are busy enough on the phones to warrant the minimum number of channels you are allowed to order (it varies depending on provider).

BRI if you only need a few channels or PRI is too expensive.

FXO if you absolutely can't use anything else - try seaching the forums for FXO voice quality, FXO disconnect supervision, FXO answer supervision to get a sample of some of the problems you are likely to hit. Even if all goes well, FXOs generally have notably lower voice quality.

Regards

Aaron

Please rate helpful posts..

rdossouvi Thu, 09/23/2010 - 07:17

With just let's say 10 users and with the ratio 1 line per 3 users, PRI will be a waste of money right?

Correct Answer
Aaron Harrison Thu, 09/23/2010 - 07:24

Hi

Quite possibly; it depends on your SP's pricing and your usage.

That's why I suggest BRI (2 channels per circuit) rather then FXO; far more reliable and with much better quality.


Regards

Aaron

rdossouvi Thu, 09/23/2010 - 08:55

for a BRI circuit we're looking at about 6 users or so correct?

Aaron Harrison Thu, 09/23/2010 - 09:11

Hi

It really depends on the user base; that would seem reasonable but if you have heavy phone users you may need more.

Regards

Aaron

Please rate helpful posts and mark answered questions that you've got a satisfactory response from to help identify useful content in the forums...
https://supportforums.cisco.com/docs/DOC-6212

Actions

This Discussion

Related Content