Ringing Generator - Nortel Meridian SuperNode SL-100 Reference Manual

2-10 IPE architecture
Line Side T-1 Card (NT5D11)
The LTI card combines the software interface of an analog card with a T-1
interface into a single IPE circuit pack. The LTI emulates the software
interface of an ALC and provides a T-1 interface to voice mail and voice
reponse unit (VRU) equipment. Because the LTI provides 24 ports, it requires
2 card slots, using 16 channels on the first slot and 8 channels on the second.
For more information on the LTI card, see the Line Side T-1 Interface (LTI) for
IPE Services Guide, 555-4001-022
Meridian HomeOffice II (MHO II Release 2)
The MHO card is a telecommuting line card that connects a Meridian
proprietary digital telephone and PC to the offica LAN from a home office.
This is accomplished through:
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For more information on the MHO card, see the Meridian HomeOffice (MHO)
User Guide, 555-8321-205

Ringing generator

The ringing generator (NT6D42) provides analog (500/2500) set ringing
capabilities for the ALC and MLC cards and is required if analog lines are
configured in the shelf. The ringing generator also supplies -150 V dc to the
message waiting lamp sets.
The dc ringing generator operates from a nominal -48 V dc input and provides
selectable ac ringing voltage outputs superimposed on -48 V dc. The frequency
and voltage options are 20/25/50 Hz and 70/80/86 V ac. The ringing generator
also supplies -150 V dc for message waiting lamp voltage for 500/2500 set
applications.
The ringing generator mounts in the IPE module to the right of the PEPS.
The following status and fault reports can be detected by the XSM and
transmitted to the SL-100 CC.
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555-4001-129 Standard 08.01 November 2000
an ISDN Basic Rate Interface (BRI) line installed in the home office
a HomeOffice Router connecting the PC to the corporate LAN and digital
telephone to the corporate PBX
card functioning properly
card completely shut down
card partially shut down
card not present