Nortel SL-100 Product Manual page 44

44 Meridian SL-100 peripherals
Element
P-side interface
components
Core-side (C-
side) interface
components
Message
Protocol Card
(MPC) with
downloadable
tones
Signaling
termination
cards
Tone detection/
reception
Copyright © 2006, Nortel Networks
.
Description
• 64 Mbytes onboard memory
• 128 flash memory
• optional onboard Peripheral/Remote Loader (PRL)
Terminations for P-side carriers support a variety of CCS7 and PRI trunk
interfaces. T1 carriers are terminated on 6X50 cards. For a T1, the external
bit-stream is All Bits Inverted (ABI) u-law.
6X44 time switch, which makes connections between 64 kbps carrier
channels and the timeslots on the Digital Trunk Controller's internal speech
bus, converting serial bit stream on an external carrier to/from a parallel data
stream on the speech bus.
Signaling card providing control/status information for PCM30 interface.
DS-512 optical fiber interface to the Meridian SL-100 switching matrix.
The speech bus formatter and clock card performs serial-to-parallel
conversions of encoded voice signals received on the DS-512 interface and
parallel-to-serial conversion of encoded voice signals destined for the DS-512
interface. Each parallel data stream to/from the formatter is connected to
the speech bus timeslot through the Channel Message Supervision (CSM)
interface card. The clock selection of the formatter card provides the Digital
Trunk Controller shelf clock.
The Channel Supervision Message interface card performs parity checking
on the parallel data streams to/from the formatter and monitors speech path
integrity for each active call.
The Message Protocol Card interfaces with the parallel speech bus to provide
a C-side and P-side messaging interface using the DMSX protocol. In
particular, it accepts control messages from the Core and relays them to other
components. It also supports the provision of tones on the outgoing speech
channels by means of a toneset downloaded to it as part of the static XPM data.
The Enhanced ISDN Signaling Preprocessor (EISP) card terminates ISDN
PRI signaling.
The following optional cards are used to monitor speech bus channels for
incoming tones and report detected tones to the control processor:
• Universal Tone Receiver (UTR) - A Universal Tone Receiver can monitor
up to 30 channels for up to 128 different tones.
• Global Tone Receiver (GTR) - A performance-enhanced version of the
Universal Tone Receiver, which can detect either u-law or A-law tones.
• Continuity Tone Detector (CTR) - Monitors incoming CCS7 trunks for
continuity checking tone.
Communication Server 2100
Meridian SL-100 Product Guide
555-4001-103 20.01 Standard
SE09 20 October 2006
Nortel Networks Confidential