[cisco-voip] Need Help on CME Installation

[Matthew Loraditch]

I've always been told the rule of thumb for saving money is more than 12 POTS lines get a PRI. Unless they have some reason to need all those analog lines or contract issues I'd investigate that for your own sanity. As for how all the numbers work you may need to check with the carrier if you stay POTS, they could have rollover trunks setup or other such things.

Also I think DID lines require an FXS/DID card. They aren't like regular POTS.

Matthew Loraditch
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From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Kim, Hyoun S
Sent: Wednesday, January 27, 2010 3:55 PM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Need Help on CME Installation

Some of you may remember me.  My employer has put me in charge of installing Cisco VoIP solutions for various offices around the state.  I've installed 4 of them so far, roughly with 40-50 users at each office.  I've been getting real comfortable with installing them but all those offices utilized a PRI.  So configuration of the system was fairly simple and if all was set up correctly, you could just unplug the PRI from the old phone system and plug it into the Cisco router and everything works just fine.

For my next office, things are somewhat different and I'm not sure how to approach it.  I was told that the next office does not have a PRI.  I'm not 100% fluent in telephony, but their current Nortel system utilizes 13 POTS lines, 1 BRI, and 4 trunk groups.  There are  15 DID numbers each trunk group for a total of 60 DID numbers.

For the new router, (which is a C2821), I went ahead and requested 4 VIC2-4FXO cards.  Are these the right cards to get?  I didn't get the BRI card because I'm going to see if the phone company can convert the BRI to POTS lines to save some money.  So that should give me a total of 15 POTS lines to plug into my router.

The DID numbers span from 9421 through 9480.  However, on the information sheet, there are other numbers as well (which I'm assuming are the actual POTS lines' numbers).  These numbers are all over the place, such as 1101, 1103, 1119, 2562, 4400, etc.  When I dial them, they are picked up by the Nortel automated system as if I were dialing the direct line specified in the DID number range.  So my question is, when I program the CME/CUE, do I just configure ephone-dn according to the DID numbers and leave out those other numbers?  I'm just wondering if the Telco forwards all these "other numbers" to that DID's "direct line".  I know for the Autoattendent, you just use 1 number.

Is this the right way I should be going about this?

Thanks for any help and sorry for the long e-mail.

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________________________________
Hyoun Kim * Network Administrator I - East Division
640 Broadmor Blvd * Suite 80 * Murfreesboro, TN 37129
' 615.217.6245 * ' 859.312.6941 * 7 615.217.6255 * * Hyoun.Kim at chartercom.com<mailto:Hyoun.Kim at chartercom.com>




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