TRUNKING for 2 mics over 1 PRI

[joelunchpail]

I have 2 MICS units about 3 or 4 hundred feet apart each with analog trunking.
The customer wants to upgrade to a PRI.
Is it possible to share one PRI with the second mics. If so what kind of wiring or fiber is required between sites?
What do i need for an interface and is the incoming and outgoing routing feasible?
Right now they are tied together with a couple of E&M trunks for local to local calling and each have their own outside lines.

 

[RikRodgers]

Adding another DTI to each should do the trick... You'll have to get a cat 5 run between the two to build your own P2P T1.

 

[jerryreeve]

you would need 2 DTI Cards on one system and 1 DTI card on the other. also you would need PRI enabler keycodes to allow you to run PRI.

at that point you should be able to link the two together using 2 pair of cable or a cat 4 or 5 cable to keep it neat the pinout would need to be reversed by that the transmit pair of one system would need to be connected to the receive pari of the other. Pins 1 to 4 and 2 to 5

A MCDN Keycode would also be required

pull out the installer guide and look carefully at the networking with norstar portion of the guide.

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Hill?? What hill??
I didn't see any $%@#(*$ Hill!!
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JerryReeve
Communication Systems Int'l
com-sys.com

 

[hawks]

Also add either a COMBO Card or Sevices Card to each system. You will need that for Clocking.

 

[joelunchpail]

that sounds good to me.
Will i have any problem with the distance.
There is a 50 pair cat 3 tie cable between the offices now. Any chance that would suffice?

 

[jeter]

If your worried about distance you can insert an Adtran TA600 at both ends and use the DSX-1 port to connect your DTI cards.




Go Army!
Tek-TIP Member 19,650

 

[jerryreeve]

With a T1 pushing distance of 400 ft should not be a problem with using the cat3 cable. If you see anything suspicious use pairs on diferent bundles of the 50 pair (pair 25 and 50) or double up the pairs (bond two pairs together to put more copper into the path for each direction.)

----------------------------
Hill?? What hill??
I didn't see any $%@#(*$ Hill!!
----------------------------
JerryReeve
Communication Systems Int'l
com-sys.com

 

[RikRodgers]

If you still have trouble, ground some spare pairs out on the 50pr. Running a seprate cat5 is always best, but if it works on existing cable, why bother?

 

[covcom]

I'd Pull fiber, install a station module or 2 and do away w/ the 2nd mics. You will also need a fiber expansion module.

 

[RikRodgers]

Covcom's referring to citel's multimode fiber extender modules.

Good solution if it won't put your system past capacity.

 

[endlesswinter]

300-400 feet? Just run a copper cable and extend the stations off of the one PBX.

 

[jeter]

Generally speaking the NIU(network interface unit) if properly installed can reach out usually to about a 1000ft but I try to stay less than 500. That is only because the provider will start complaining if there is a repair issue.


Go Army!
Tek-TIP Member 19,650