Clock synchronization | Nortel Networks R2MFC specification

62Chapter 6 R2MFC MBM maintenance

During call setup, the following information is passed between the BCM and the CO:

1Dialed digits — Dialed digits are passed without any change. Up to 24 digits can be dialed. The MFC trunk is capable of repeating dialed digits on outgoing calls to the CO, when requested according to protocol.

Digits are passed immediately to BCM as they are received (PRI overlap mode) on incoming calls from CO to BCM. This causes the BCM to determine end of dialing, and to immediately signal call completion.

2Calling number — (in PRI: CLID; in MFC: ANI) This number is passed without any change, and can be up to 16 digits long.

3Termination status — Termination status is translated as presented in the Table 9. The table shows both directions. When translating a signal, only the bold value is used.

Table 9 Translation of Subscriber Status

Subscriber State	PRI Signal	MFC Signal1

Free (ringing)	ALERTING	BW_FreeCharge (B6)
		BW_FreeNoChrg (B7)

Busy	Cause 17	BW_Busy (B3)

Unallocated number	Cause 1	BW_Unlocated (B5)

Network congestion	Cause 42	BW_B_Congest (B4)
or general failure	All other values	Unknown signal

Line out of order	Cause 27	BW_OutOfOrder (B8)

Number changed	Cause 22	BW_ChangOrder (B2)

1 MFC signal is indicated by meaning. Actual signal depends on country; ITU/T standard is indicated in parentheses.

Other protocol-specific fields are not translated from side to side. They are handled as described Table 9 in the protocols implementation.

Clock synchronization

By default, the R2MFC MBM synchronizes on the external E1 line, and transmits this clock on the internal link to the BCM. By doing so, the BCM can synchronize on the external link.

Slips may occur between the BCM and the R2MFC MBM, if the BCM needs to synchronize on another digital trunk MBM. To avoid slips, there is an option for the R2MFC MBM to synchronize on the internal link to the BCM, instead of the external E1 line. Synchronization settings can be set up by using the CLI. See Chapter 7, “Command Line Interface (CLI),” on page 73 for commands available through the CLI.

NN40010-300

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Nortel Networks manual Clock synchronization, R2MFC MBM maintenance, Translation of Subscriber Status

Contents

R2MFC Media Bay Module Installation and Configuration Guide Safety North American Regulatory Information Radio-frequency Interference Enhanced 911 ConfigurationR2MFC Media Bay Module Installation and Configuration Guide Repairs Important Safety InstructionsHearing Aid Compatibility NN40010-300 International Regulatory Information NN40010-300 Contents Chapter Preparing to install the R2MFC MBM Chapter R2MFC MBM maintenance Appendix a Configuring DIP switch settings and definitions MFC Register Signaling Panama Config 1 NN40010-300 Getting Help from the Nortel Web site How to Get HelpGetting Help over the phone from a Nortel Solutions Center Getting Help through a Nortel distributor or reseller How to Get Help NN40010-300 Audience Getting startedAbout this guide Before you begin Acronyms Symbols and text conventions Pswd Convention Example Used for Related publications Getting started NN40010-300 Chapter Overview General information Overview Administration and maintenance toolsR2MFC MBM faceplate elements Config DIP switches System Status LEDs RS232 port BNC and RJ-48 connectorsR2MFC MBM back and underside elements E1 Status LEDs Power connectors MBM DIP switches Overview NN40010-300 Chapter Preparing to install the R2MFC MBM Preparing to install the R2MFC MBM Installation process mapHost system setup requirements Host system setup requirements R2MFC MBM setup requirements Config DIP switches Customer supplied hardware requirements Chapter Installing the R2MFC MBM Overview of the R2MFC MBM installation Shutting down a BCM 4.0 system Installing the R2MFC MBMShutting down the system Shutting down a BCM 3.7 or lower system Shutting down the BCM 4.0 system hardware Installing an R2MFC MBM Installing an R2MFC MBM in the BCM platform base chassis Installing an R2MFC MBM in the expansion unit Installing an R2MFC MBM in the BCM50 expansion unit Installing the rubber boot in an R2MFC module R2MFC Transmit Co-axial cable connected to the MBM Reconnecting the equipment Removing an R2MFC MBM How to remove a BCM200 R2MFC MBM Removing an R2MFC MBM from the BCM platform base chassis How to remove a BCM400 R2MFC MBM Removing an R2MFC MBM from the expansion unit Wiring an R2MFC MBM How to remove the expansion unit front bezel Installing the R2MFC MBM Connecting an R2MFC MBM to a service provider Trunk wiring overview Installing the R2MFC MBM Chapter Configuring the R2MFC MBM Configuring the R2MFC MBM E1 framing MFCR2 side External Link configurable parametersPhysical line characteristics Line signaling Register signaling Minimum or fixed number length + timer parameters Option Parameters Meaning Default Configuring the MFCR2 external link Setting Config DIP switches Config DIP switch layout Creating a customized country code PRI side Internal Link configurable parameters E1 framing default parameters Configuring the PRI internal link using Element Manager Configuring the PRI internal linkSignaling Layer 2 signaling parameters Module configuration parameters Parameter Setting Configuring the PRI internal link using Unified Manager BCM lines configuration for R2MFC MBM Module type BCM module configuration for R2MFC MBM Off Turning on second dial tone using Element Manager Turning on second dial tone Turning on second dial tone using Unified Manager Outgoing dialing configuration for second dial tone Configuring the R2MFC MBM Chapter R2MFC MBM maintenance Inter-working functionality Translation of Subscriber Status R2MFC MBM maintenanceClock synchronization Diagnostic and loopback modes Diagnostic toolsSetting the R2MFC MBM to diagnostic mode Mode Description Call Availability Alarms Alarms Measurements Group I Alarms propagation Sheet 1 Alarms propagationIncoming signal errors Alarm Cause Faceplate LEDs R2MFC MBM maintenance Group I Alarms propagation Sheet 2Group II alarms propagation System status monitor LEDs LED Name Yellow LED Error messagesLogs and traces Red LED Overview of module replacement process Replacing an R2MFC MBM Upgrading firmware Hyper-terminal setup parameters Connect using Program responds starting rec 0. Hit any key to continue R2MFC MBM maintenance NN40010-300 Overview Chapter Command Line Interface CLIUsers and passwords Accessing the CLI Command Line Interface CLI INfo directory CLI commands CommandsLOad directory CLI commands LOad directory VIew directory CLI commands VIew directory CNtrl directory CLI commands Sheet 1 CNtrl directory NN40010-300 COnfig directory CLI commands Sheet 1 COnfig directoryCNtrl directory CLI commands Sheet 3 NN40010-300 ALarm directory ALarm directory CLI commands Sheet 1 NN40010-300 SWerr directory CLI commands SWerr directory MFC directory CLI commands Sheet 1 MFC directory MFC directory CLI commands Sheet 2 See Chapter , MFC Signal Definitions, on page 111 for MFC R2 directory CLI commands Sheet 1 R2 directory Command Line Interface CLI R2 directory CLI commands Sheet 2 PRI directory CLI commands PRI directory Command Line Interface CLI NN40010-300 Appendix a Configuring DIP switch settings and definitions Shows the Config DIP switch layout Country selection DIP switch settings Second dial tone DIP switch settings Mexico Config 1 R2 A/B signals Country code defaultsMexico Config Meaning Signal Interpretation of received MFC signalsInterpretation of transmitted MFC signals Sheet 1 Mexico Config Mexico Config 2 R2 A/B signals Interpretation of received MFC signals Sheet 1 Interpretation of transmitted MFC signals Brazil Config Brazil Config 1 R2 A/B signals Interpretation of received MFC signals Brazil Config Brazil Config 2 R2 A/B signals Argentina Config Argentina Config 1 R2 A/B Signals Interpretation of received MFC signals Chile Config Chile Config 1 R2 A/B signals Signal Block Panama Config Configuring DIP switch settings and definitions NN40010-300 Appendix B Diagnostic and loopback DIP switch settings Diagnostics and Loopback Dip Switch Settings Diagnostic and loopback DIP switch settings NN40010-300 MFC signal meaning Appendix C MFC Signal DefinitionsMFC signal definitions MFC Signal Definitions NN40010-300 Appendix D CLI Cable Pinout Cable pinouts CLI Cable Pinout NN40010-300