sundance-communications.com/forum Forums Wiring - Telecom Carriers - Trunks & Services T1's, CSU's and DSU's Adtran CSU Time Sync

Keep your balance Ark. Don't worry, timing is being provided (somehow) to your PRIs. Since the rebooting is occuring on all 4 Adtran CSUs, just for now, let's look beyond the CSUs and beyond the timing.

You mention that your 2 Tandberg gateways give you the option to group your 4 PRIs into 2 separate groups:

1. We need to know if your 4 PRIs are being provided as "Stand-Alone" PRIs, or like Majestic mentioned, are they being sent configured in one (or two) PRI NFAS Group(s)?

2. Are your 2 Tandberg gateways currently set (or not set) to group the 4 PRIs into 2 separate groups?

The PRI's don't always go down at ounce sometimes it would be a pair per trunk. However recently I've been getting 3 CSU's error out from 4, which is odd.

1: I believe they are 4 stand alone PRI's and not provided as grouped (NFAS).

2: Yes, 2 PRI's from 1 Trunk is grouped together on my first Gateway. The second Gateway also has 2 PRI's grouped to a second trunk.

3: Out of the 4 PRI's 1 is copper and the others are fiber.

I've enclosed the info to the order of the PRI's if that helps.


ISDN PRIME PROVISIONING:

Type of Prime: Custom (NI1) 0 National (NI2) 1

Number of Prime Pipes: 4
Central office type serving ISDN Prime: 5ESS
Type of CPE (Customer Premises Equipment): TANDBERG Gateway Software G2.1

D Channel information:
1 D Channel per DS1: Yes 1 No0 Other

Backup D Channel: Yes 0 No1


Transport Facility:

Additional pipe information (example, information associated with services riding DS3 or SONET):


B Channel information:
Total # of Trunk Groups: 2
Overflow/Route Advance to TGP:

# Of digits outpulsed from C.O. to PBX: 7
PIC: MCI IntraLATA PIC: MCI
Trunk direction:
2 Way Call by Call 1 One Way Out (DOD) 0 One Way In (DID) 0

C.O. Hunting: Ascending 0 Descending 1

Glare: CPE Yields C.O. Yields X
Type of trunk group: Channels Dedicated 0 Channels Call by Call 1

Call by Call group size: (DID) 46 (DOD) 46
System Intercom: Yes 0 No 1

Caller ID: Yes 1 No0

Caller ID with name (if available): Yes 1 No0


Special Instructions: Overflow provided from Trunk group 0717 to Trunk Group 0730

Telephone number information:
Quantity of new DID #s: 10 per Trunk Group

Inside Wiring:
Yes No X


Thanks for the info Gentlemen...

....ARK

Ark, Although the provisions look fine, I notice that the Adtran ACE [3rd Generation] Stand Alone CSUs have eight small red dipswitches located on the rear of the devices. I wonder if the 4th GENs have these as well. If so, do the dipswitch settings match across all four of your CSUs?

Hello Mike,

These 4 gen CSU's don't have the dip switches, and the Adtran Tech keeps telling me that that these CSU's have no control for CO timing. He states that
any timing on the T1's are supposed to go through the CSU's to a DSU. Other than the CSU's my Tandberg equipment understands TCP/IP - UDP, but not framing. So at this point I'm stumped on how the clock is set up on the PRI.

ARK.........

Don't let it stump you, Ark. Without timing, the T1/PRIs would be completely down, and no calls would fly. The timing source has to be the CO. Are you still receiving alot of T1 errors; CSUs still restarting?

Thanks for the confidence boost Mike, it's nice to get back ounce in a while (LOL).
Your feed back was my thought exactly the PRI's would not function.
And Yes,the CSU's would usually error out about every 2 to 3 weeks, fortunately it has not effected daily operations.
Today as a mater of fact was one of the days. The AT&T engineer found that there was a yellow alarm on the smart jack (CPE), but didn't know what it meant.

The question is did the smartjack see the CPE or did the CPE see the smart jack? I'm sure I'll find out soon. But in the mean time I'm still looking for the time (LOL), or how to retrieve the signal to verify it's there.

THX.....

An AT&T or at&t engineer didn't know what a yellow alarm meant? Maybe they need to do a little more out sourcing. A yellow only means one thing it's an alarm put out by a piece of equipment PBX, CO switch whatever that means it's not receiving a signal, which can't be if the PRI was up.

A little bit of clarification on pri timing. The switch provides the timing. If it is a SBC/ATT pri, not a resale, then the SBC switch in the co will provide the timing. If it is a say a MCI, Sprint etc PRI, SBC is just providing the pipe, no chanels, no timing, the clec, other company provides the timing with their switch. The only T1's SBC normally provides timing or chanelization on are their own pri and supertrunks.

Now you say I know I get the timing from the co on my non pri t1s. Sometimes you can, if it is not a point to point going thru a sonet ring BUT the timing is on there for the lec not the customer and they make no warranty you can use the timing. Point to point, one end should provide and the other receive.