Nortel Meridian 61C

[GCDLin]

Hi, I have an alarm circuit configuration on the Meridian PABX . I would like to know if this alarm has been configured as loop start or ground start please. Is it possible to say that by looking at the below posted pat of configuration. This is the analogue Extns_(LD20) config file. Please let me know if you need any more info.
DES UPSLOWV

TN 012 0 00 12

TYPE 500

CDEN 4D

CUST 0

WRLS NO

DN 4020 0 MARP

AST NO

IAPG 0

HUNT

TGAR 1

LDN NO

NCOS 0

SGRP 0

RNPG 0

XLST

SCI 0

SCPW 4020

SFLT NO

CAC_MFC 0

CLS FRE MNL FBD XFD WTA THFD FND HTD ONS

LPR XRD AGRD CWD SWD MWD RMMD SMWD LPD XHD CCSD LND TVD

CFTD SFD MRD C6D CNID CLBD AUTU

ICDD CDMD EHTD MCTD

GPUD DPUD CFXD ARHD OVDD AGTD CLTD LDTD ASCD

MBXD RDI RCC HBTD IRGD IAMD DDGA NAMA MIND

NRWD NRCD NROD CRD PRSD MCRD

EXR0 SHL ABDD CFHD DNDY DNO3

USRD BNRD OCBD RTDD RBDD RBHD FAXD PGND FTTC

PLEV 02

AACS NO

MLWU_LANG 0

FTR HOT D 5014020

 

[KCFLHRC]

There are no ground start analog phones, only trunks

 

[gwebster]

Do you have the analog 500 line connected to a “trunk” on another piece of equipment? In that case the “trunk” is going to be loop start.

 

[KCFLHRC]

It's programmed as a Hot Dial to 5014020 so you come off hook and no dial tone, it just rings the destination so the Alarm System would be programmed loop start

 

[GCDLin]

Thanks all. Much appreciated. I will get back if there's any more queries.