Main
Meridian 1
Meridian Internet Telephony Gateway (ITG) Trunk 2.0/ISDN Signaling Link (ISL)
Description, Installation and Operation
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Contents
ITG Engineering Guidelines . . . . . . . . . . . . . . . . . 71
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ITG MAT PC management configuration . . . . . . . 147
Install and configure ITG ISL Trunk node . . . . . . . 153
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OA&M using MAT applications . . . . . . . . . . . . . . . 247
OA&M using the ITG shell CLI and overlays . . . . 275
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 295
Appendix A: Cable description and NT8D81BA cable replacement . . . . . . . . . . . . . . . . 333
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About this guide
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Description
ITG ISDN IP Trunk
tandems
Meridian 1 to IP network, providing point to multi-p o in t co n n e c tio n
DSP
t
System requirements
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List of ITG ISDN components
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Ordering rules and guidelines
Ordering rules for ITG ISL Trunk node initial configuration
Ordering rules for ITG ISL Trunk node expansion
Sparing ratios for ITG Trunk components
ITG ISL Trunk card description
Card roles
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ITG NODE
Card combinations
Interactions among card functions
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ITG ISL Trunk card physical description
MSDL XNET XNET
IPE Shelf
Faceplate indicators, controls, and interfaces
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Backplane int erfaces
Assembly description
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ISDN Signaling Link
Description Page 45 of 378
Figure 7 ITG configuration
IP Network
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Inter-card signaling paths
DCH Processor H.323
Processor
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Dialing plans
Multi-node configuration
North American dialing plan
ITG
Flexible Numbering Plan
CPE
Electronic Switched Network (ESN) Network Signaling
DN 7000
ITG
Echo cancellation
Silence Suppression
DTMF Through Dial
Quality of Service
Quality of Service parameters
Network performance utilities
E-Model
Fallback to alternate facilities
Triggering Fallback to alternate trunk facilities
Return to the IP ne twork
Type of Service
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Fax support
Remote Access
Per-call statistics support using RADIUS Client
Configuration
Messaging
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SNMP MIB
MIB-2 support
ITG SNMP agent
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Codec profiles
G.711
G.729A
G.729
G.723.1 (5.3 kbit/s or 6.3 kbit/s)
Security passwords
Administrator level
Technical support level
ITG Engineering Guidelines
Introduction
Audience
ITG equipment requirements
Scope
Network engineeri n g guidelines overvi ew
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ITG traffic engineering
Use of Ethernet and WAN bandwidth
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Page 78 of 378 ITG Engineering Guidelines
Note 1:
Note 9:
Note 8:
Disable silence suppression at tandem nodes
Simultaneous voice traffic with silence suppression
Page 80 of 378 ITG Engineering Guidelines
553-3001-202 Standard 1.00 April 2000
Table 6 Silence suppression disabled T-LAN Ethernet and WAN IP bandwidth usage per ITG port
Note 8:
Note 7:
T-LAN traffic calculations
The following are calculation procedures for T-LAN:
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General LAN and WAN engineering considerations
Fax engineering considerations
Configuration of Meridian 1 routes and network translation
Configure the IP router on the T-LAN
Leader And DCHIP Card Real Time Engineering
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Provisioning ITG IS L TIE trunks and routes
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WAN route engineering
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Assess WAN link resources
Link utilization
Estimate network loading caused by ITG traffic
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Route Link Traffic Estimation
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Decision: Enough capacity?
Insufficient link capacity
Other intranet resource considerations
QoS Evaluation Process Overview
Set QoS
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QOS leve ls with G.729A cod e c
QOS leve l wi th G . 711A/G.711U codec
Packet l o ss (%)
One-way delay (ms)
QOS leve ls with G.723 co dec
Measure intranet QoS
Measure end-to-end network delay
Measure end-to-end packet loss
Adjust ping measurements
Network delay and packet loss evaluation example
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Other measurement considerations
Obtain QoS measurement tools
Decision: does the intranet meet expected ITG QoS?
Fine-tune Networ k QoS
Components of delay
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Queueing delay of various links
Reduce link delay
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Reduce hop count
Adjust jitter buffer size
Reduce packet errors
Routing issues
Network modeling
Implement QoS in IP networks
Traffic mix
TCP traffic behavior
ITG support for TOS field and IP QoS
Queue management
Use of Frame Relay and ATM services
Internet Protocols and Ports Used by ITG
ITG ISL Trunk card connections
Set up a system with separate subnets for voice and management
Subnet configurations
Single subnet option for voice and management
Multiple ITG nodes on the same E-LAN and T-LAN segments
Setting up the E-LAN or management subnet
Selecting public or private IP addresses
T-LAN engine er ing
Setting the Quality of Service threshold for fallback routing
Basic setup of the ITG system
ITG Trunk DSP profile settings
Codec types
Fall back threshold
Payload size
Silence suppression parameters (Voice activity detection)
Jitter buffer parameters (Voice playout delay)
Post-installation network measurements
Set ITG QoS objectives
Intranet QoS monitoring
ITG network inventory and configuration
User feedback
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Estimate QoS level
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ITG MAT PC management configuration
MAT ITG Engineering rules
MAT network setup guidelines
MAT Remote Access configuration
ITG MAT PC management configuration Page 149 of 378
MAT PC description
Figure 20 Remote access with full access to the customers LAN/WAN
553-9308
Enterprise LAN (C-LAN)Enterprise LAN (C-LAN )
M1 Core
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MAT PC hardware and software requirements
Hard drive requirements
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Install and configure ITG ISL Trunk node
Before you begin
Installation Procedure Summary
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Create the ITG Trunk Installation Summary Sheet
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Install and cable ITG trunk cards
Card installation procedure
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Install NTCW84JA Large System I/O Panel 50-Pin filter adapter
Remove existing I/O panel filter adapter
System I/O Panel
Install NTMF94EA and NTCW84KA cables
Install the NTCW84KA cable (for DCHIP cards)
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Install the NTMF94EA cable (for non-DCHIP cards)
Install shielded voice interface (T-LAN) cable
Install shielded management interface (E-LAN) cable
D-channel cabling for the NT0961AA 24-Port ITG Trunk card
Large systems required cables and filters
Set NT6D80 MSDL switches
Install filter and NTND26 cable (for MSDL and DCHIP cards in same Large System equipment row)
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Meridian 1 Small System cable installation (Option 11C and Option 11C Mini)
Install the serial cable
Configure ITG Trunk data on the Meridian 1
Configure the ISL D-channel on the Meridian 1 for the DCHIP card
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Configure ISDN feature in customer data block
Configure ITG ISL TIE trunk routes
Note: You must configure Trunk routes as TIE routes..
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Configure ITG ISL trunk cards and units
Record the first CHID for each ITG ISL Trunk card on the installation summary sheet.
See Note 1.
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Configure dialing plans within the corporate network
Make the ITG the first-choice, least-cost entry in the route list block
Turn on Step Back on Co ngestion (SBOC) for the ITG Trunk route
Turn off ITG route during peak traffic periods on the IP data network
ESN5 network signaling
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Disable the ITG Trunk cards
Configure ITG Trunk d ata on MAT
Add an ITG Trunk node on MAT manually
Add a node and configure general node properties
Set node location properties
Single vs. separate subnets for T-LAN and E-LAN
Configure Network Connections
same subnet
separate subnets
Configure card properties
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Configure DSP profiles for the ITG Trunk node
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Chan
e default DiffServ/TOS value for Control and Voice
Configure SNMP Traps/Routing and IPs tab
Configure Accounting server
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Set Security for MAT SNMP access
Exit node property configuration session
Create the ITG Trunk node dialing plan using MAT
Confi
ure General tab
Qualit
y
of service
Confi
ure Di
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Retrieve the ITG Trun k node dialing plan using MAT
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Transmit ITG trunk card configuration data from MAT to the ITG trunk cards
Before you can transmit configuration data
Setting the Leader 0 IP address
Configure the IP address of the Leader 0 ITG card, using the ITG shell command line inte rface.
Note 3:
Note 4:
Appendix D
Transmit the node properties, card properties and dialing plan to Leader 0
Verify installation and configuration
Observe ITG ISL trunk status in MAT
Transmit Card Properties and Dialing Plan to Leader 1 and Follower cards
Verify that the ITG Trunk cards are disabled in the Meridian 1 before transmitting card properties.
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Set date and time for the ITG ISL Trunk node
Change the default ITG shell password to maintain access security
Change default ESN5 prefix for non-ESN5 IP telephony gateways
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Check card software
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Transmit new software to ITG Trunk cards
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The software upgrade pro cedure is complete.
Upgrade the DCHIP PC Card
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Configure MAT Alarm Management to receive SNMP traps from ITG ISL Trunk cards
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Make test calls to the remote ITG nodes
Upgrade an ITG Trunk 1.0 node to support ISDN signaling trunks
Upgrade procedure summary
Before you begin
Install the DCHIP hardware upgrade kit
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Install the DCHIP I/O Panel breakout cable from the upgrade kit
Upgrade the 8-port ITG basic trunk software to ITG ISL trunk software
Step 1 - Remove ITG 1.0 configuration files
Appendix D
Note 4:
Note 3:
Step 2 - Transmit ITG Trunk 2.0 software to the 8-port cards
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Remove ITG 1.0 configuration data from Meridian 1
Configure the Meridian 1 ITG ISL Trunk data: upgrade considerations
Verify ROM-BIOS version
Upgrade Troubleshooting
MAT cannot refresh view (Card not responding)
How to upgrade software using the ITG shell
Use this procedure if MAT displays a Card status of Not Responding.
OA&M using MAT applications
MAT OA&M procedure summary
Alarm Notification on page269
Delete a node
To delete a card, perform the following steps:
Database locking
ITG Card Properties
ITG Card Properties Maintenance window
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ITG Card Properties Configuration window
DSP maintenance window
D-channel maintenance
Add Dialing Plan entries
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Transmit configuration data
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Add an ITG ISL Trunk node o n MAT by retri eving an existi ng node
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Retrieve and add an ITG ISL Trunk Node for maintenance and diagnostic purposes
Configuration audit
Retrieve ITG configuration information from the ITG node
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Schedule and generate and view ITG OM reports
Backup and restore operations
Alarm Notification
Meridian 1 system commands - LD 32
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Disable the indicated ITG card
To disable the indicated ITG card in LD 32, use the following command:
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OA&M using the ITG shell CLI and overlays
ITG Shell OA&M procedure summary
Access the ITG shell through a maintenance port or Telnet
Connect a PC to card maintenance port
Telnet to an ITG card through the MAT PC
Change the default ITG shell password to maintain access security
You will be prompted for the current user name:
Reset the defau lt ITG shell pa ssword
Download the ITG operational measurements through the ITG shell
> for the previous file.
<hostname, username, password, directory path, filename
> for the current file, or prevOMFilePut
<hostname, username, password, directory path, filename
Reset the operational measurements
Display the number of DSPs
Display ITG Node Properties
Transfer files through the command line interface
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Upgrade ITG card software from the command line interface
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Up
rade ITG card software via an FTP hos t
Backup and restore from the ITG command line interface
Recover the SNMP community names
IP configuration commands
Download the ITG error log
Meridian 1 system commands - LD 32
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Disable the indicated ITG card
To disable the indicated ITG card in LD 32, use the following command:
To disable a indicated ITG port in LD 32, use the following command:
Disable the indicated ITG card when idle
To disable the indicated ITG card when idle in LD 32, use the following command:
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Maintenance
ITG Trunk 2.0 alarms
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Major Alarms Immediate intervention required
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System level maintenance
Access the ITG card
ITG card overlay commands
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MAT maintenance commands
Multi-purpose Serial Data Link (MSDL) commands
Simple Network Management Protocol (SNMP)
TRACE and ALARM/LOG
ITG shell command set
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hostname
Hostname
Example:
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ITG card self-tests
Card LAN
BIOS self-test
Base code self-test
Field-Programmable Gate Array (FPGA) testing
Upgrades
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Up
rade softwar e u sin
MAT
Replace an ITG card
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Check card software
Transmit card properties and dialing plan
Backup and restore proced ur es
ITG card
MAT
Command line interface
Fault clearance procedures
DSP failure
Card failure
DCH failure
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ITG Trunk 2.0 faceplate maintenance display co des
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To Hub
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NTCW84KA E-LAN, T-LAN, DCH & Serial cable
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NTAG81CA Faceplate Maint en an ce ca ble
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NTAG81BA Maintenance Extender cable
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NTMF04BA MSDL extension cable
15 way Male D-Sub 15 way Female D-Sub
NTCW84LA and NTCW84MA upgrade cables
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Prevent ground loo p s on connection to external customer LAN equipment
Replace cable NT8D81BA with NT8D81AA
Appendix A: Cable description and NT8D81BA cable replacement Page 351 of 378
Figure 65 Backplane slot designations
Tools list
Ty-wrap cutter Ty-wraps Needle nose pliers Slotted screwdriver
NT8D81BA cable removal procedures
Segment 0 L15 L14 L13 L12 L11 L10 L9 L8 L7 L6 L5 L4 L3 L2 L1 L0
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Install NTCW84JA filter and NT8D81AA cable
Appendix B: Environmental and electrical r e
g
ulatory data
Environmental specifications
Mechanical conditions
Refer to Table66 for ITG mechanical tolerance ranges.
Storage
Temperature shock
Mechanical
Electrical regulatory standards
Safety
Electromagnetic Compatibility (EMC)
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Appendix C: Subnet mask conversion from CIDR to dotted decimal format
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IP Packet Filtering Idle time-out disconnect for dial-in PPP connection.
Install the RM356 modem router
Configure the MAT ITG PC to communicate with a remote Meridian 1 site via modem router
Configure the RM356 modem router by the manager menu
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Index
Numerics
A
B
C
H
I
J
L
M
T
V
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Meridian 1
Meridian Internet Telephony Gateway (ITG) Trunk 2.0/ ISDN Signaling Link (ISL)
Description, Installation and Operation
