Echo on T-1 to Avaya G3

[attrepairtech]

I have a Nortel 81c at this end (Chicago, IL) connected via T-1 (non PRI) to an Avaya G3 in Arizona. Calls direct from Chicago to Arizona OR Arizona to Chicago sound fine, AND, if a call comes in to Nortel PBX (via DID on local PRI), then get xferred to Arizona via T-1 TIE Line - call still sounds OK in Arizona (no echo). BUT, if Arizona Avaya user then xfers that call back to Chicago Nortel, we are getting major echo problems at this end.

Currently Nortel trunks are set as (only printing pertinant prompts):

TYPE: TIE
TRK: DTI
PDCA: 1 (NO MODIFICATIONS TO PAD LEVELS)
PCML: MU
SIGL: EAM
STRI/STRO: WNK WNK
SUPN: YES
CLS: CTD DTN CND WTA LPR APN THFD HKD P10 VNL


Not real familiar with adjusting PAD levels (PDCA) in LD 73, so any help is appreciated.

Also, someone mentioned changing CLS for trk from VNL to NTC or TRC - any suggestions.

Thanks in advance!

 

[NARSBARS]

The problem may be that you are unable to implement antitromboning since you do not have two Nortel switches, in effect doubling the transmission distance and adding an unsupportable delay.

I may need to do the same soon so anyone else with an idea please chip in.

NARSBARS

 

[attrepairtech]

Exactly true NARSBARS - anti-trombuning is NOT an option here. I'm going to play around with PDCA and PADS in LD 73 to see what happen. I'll let you know -

HOWEVER - I would still like to hear solutions from others if they have any!

 

[johnpoole]

if your not attempting to trmb the call, your echo is doubled via a round trip. you may be able to pad it out without dropping the overall volume below usable levels. i would have the levels tested at the provider level. do you just have the one pri, if not, is it across the board? if you are using or can use qsig that will allow trmb to work and get rid of the echo as well as giving you more trunk usage

john poole
bellsouth business
columbia,sc

 

[attrepairtech]

Well, the whole reason this is happening is because the customer in Chicago is in the process of phasing out this office. Symposium call center USED to process calls in Chicago, but call center has been relocated to Arizona (not the Symposium, just the call center - using Avaya IP Agent now). Additionally, there are still a few IP agents here in Chicago that still take calls, but now its via the Avaya - then IP Agent sends call to agent via TIE line. Anyway, some trunks, still come into Chicago PBX (Nortel) and are directed over the T-1 TIES to Arizona call center, then....if the agent getting the call is in Chicago, the call gets xferred back over the TIE line to Chicago - TALK ABOUT RUBE GOLDBERG!!!

It seems that most calls that have the echo issue are calls via Grd start trunks in Chicago. I was able to assign a new PDCA (LD 73) for all the TIE line trunks and modified the ACO and XUT xmit padding so they are padded by about 3 db more than default value (9 db total). I also padded down the DSET value (for digital sets over the TIE line to help drop it a little too). This seems to be tolerable, without threatening volume. We'll see what the next day or two holds.

Thanks for the help - I'l give you what our final outcome is.

Rich

 

[johnpoole]

makes for a great switch when they replace a symposium with a comic book key system, 90 per cent of companies that make such great tech moves end up in chapter 11. i've watch a dozen or more decent size companies spend so much on systems that don't work because the sales person was sharp, and management made the choices then turned it over to techs to "goldburg" together. symposium is to complex for 90 percent of the acd supervisor that i have met, the training is usually done by people that only know how to read the book. the best solution is a single vendor system, i don't care for avaya, but if you don't want to pay a switchman, using plug and play phones, that may not be the worst choice. of course your competion will be twice as effective. with symposium and nortel, call pilot, you can get routing to the right person in far less time. a good tech with the right switch can create a call flow that allows 30 to 40 percent less demand for agents. 60 k for average acd seat, and management is saving money by not training techs, of course that just my opinion.

john poole
bellsouth business
columbia,sc

 

[attrepairtech]

AMEN john!!

I have always enjoyed making the Meridians jump through hoops and "tweaking" to my heart's desire, but in this case, it seems like such a waste, especially since we are losing a good customer. Oh well, I'm sure the execs on the top floor feel this is the best decision. The ironic part of it all is that the Company in Chicago actually bought out the company in Arizona, but they are closing the Chicago office... The original plan was to move the Nortel to Arizona - would have been cheaper and works better. But the thought was that the guy who maintains the Avaya is staying on and he would have to learn Nortel. PLUS, the users are familiar with Avaya. So all they did was spent the money to upgrade to IP agent on the Avaya.

Now they've got a Nortel 81C (25.40B+) with mermail 13, and SCCS 4.0 PLUS about 250 3904's just sitting idle. So far, the best bid they have gotten is just over $50K. What a shame considering they probably spent close to $500K just a few years ago.

So, if you know of anyone in the market, this PBX will be in a couple months. I have to have it down and taken apart by Aug 31. They are still serving about 40 people on it, along with a full blown Symposium that has a total of 1 skillset with 3 users!!

So let me know if you are interested, I'll be happy to send you the specs.

Rich

 

[johnpoole]

jp and his soapbox, i never met a avaya (tech) that could learn a switch at all, let alone a real one.. wish the hospital i work at could jump on that switch

john poole
bellsouth business
columbia,sc

 

[johnpoole]

without a phone number or email, is there a website i can reach and place a bid on that switch? if not here's the code for my clid

REQ: prt
TYPE: clid
CUST 0
SIZE 256
RNGE


ENTRY 5
  HNTN 803
  ESA_HLCL
  ESA_INHN NO
  ESA_APDN YES
  HLCL 434
  DIDN YES
  HLOC
  LSC
  CLASS_FMT DN

DES  SWITCH
TN   056 0 14 14
TYPE 3904
CDEN 8D
CTYP XDLC
CUST 0
FDN  3301
TGAR 4
LDN  NO
NCOS 7
SGRP 0
RNPG 99
SCI  0
SSU
LNRS 16
XLST
SCPW
CLS  UNR FBD WTA LPR PUA MTA FNA HTA TDD HFA GRLD CRPD STSA
     MWA LMPN RMMD SMWD AAD IMD XHD IRA NID OLD VCE DRG1
     POD DSX VMD CMSD SLKD CCSD SWD LNA CNDA
     CFTD SFD MRD DDV CNID CDCD MSID DAPA BFED RCBD
     ICDD CDMD LLCN MCTA CLBD AUTU
     GPUA DPUD DNDA CFXA ARHA FITA CLTD ASCD
     CPFA CPTA ABDD CFHD FICA NAID RNGI AGRD MOAD AHD
     DDGA NAMA
     DRDD EXR0
     USMD USRD ULAD RTDD RBDD RBHD PGND OCBD FLXD FTTC DNDY DNO3 MCBN

CPND_LANG ENG
RCO  1
HUNT 3301
LHK  2
LPK  10
PLEV 02
AST
IAPG 0
AACS NO
ITNA NO
DGRP
MLWU_LANG 0
MLNG ENG
DNDR 0
KEY  00 MCR 4940 5     MARP
        CPND
          NAME Switchroom John
          XPLN 15
          DISPLAY_FMT FIRST,LAST
     01 MCR 4940 5
        CPND
          NAME Switchroom John
          XPLN 15
          DISPLAY_FMT FIRST,LAST
     02 MCR 4940 5
        CPND
          NAME Switchroom John
          XPLN 15
          DISPLAY_FMT FIRST,LAST
     03 TRC
     04 SCC 0080
     05 DIG 54 40 R
     06
     07
     08 MIK
     09 MCK
     10
     11 ADL 24  96984207
     12
     13
     14
     15
     16 MWK 3301
     17 TRN
     18 AO6
     19 CFW 16  8335
     20 RGA
     21 PRK
     22 RNP
     23
     24 PRS
     25
     26 CPN
     27 CLT
     28 RLT
     29
     30
     31
DATE 22 JU

john poole
bellsouth business
columbia,sc

 

[attrepairtech]

John,

Thanks for the CLID info. I'll review it and act on it.

 

[rfwhite]

Sneaky, but classy- I like it!

 

[johnpoole]

you are allowed to post code, i guess a switchman could tanslate that

john poole
bellsouth business
columbia,sc

 

[MonkAZ5]

My understanding is that u can sell the hardware but the software will have to be repurchased? Anyone know what it would cost for the software once purchasing the hardware?

Mike

 

[acewarlock]

You don't repurchase the software, you need to get a RTU (Right to Use) the softwareThere may be a small fee involved.