Lucent Technologies Whats New In DEFINITY Enterprise Communications Server Release 8.2 Manual

							What’s New in DEFINITY ECS
Release 8.2 Job Aid  555-233-754  Issue 1
April 2000
Networking Enhancements 
245 Networking - ATM 
2
nATM Network Duplication configurations come equipped with a simplex 
SPE complex in the PPN, duplicate connectivity over ATM to all PNs and 
duplicate ATM interfaces in each PN. 
nThe EPN configuration for ATM Network Duplication is the same as that for 
an EPN equipped for ATM critical reliability.
nDuplicated paths to the ATM WAN may be through the same ATM switch, 
different ATM switches, or different points on the ATM WAN.
nATM Network Duplication is a less expensive alternative to the additional 
reliability afforded by a DEFINITY® system critical reliability configuration, 
which entails duplicate SPE complexes in the PPN.
nThe overall reliability and availability measures associated with the Network 
Duplication option are better than those associated with the standard 
reliability option, and worse than those associated with critical reliability. 
nDEFINITY® system configurators do not support ATM Network Duplication 
configurations. 
nNetwork Duplication is only available with r ATM PNC configurations. 
nAll EPNs in a R8r ATM Network Duplication configuration must be 
configured the same as EPNs in a critical reliability configuration. In this 
configuration, each PN is equipped with duplicated ATM interfaces, 
duplicated tone clocks, duplicated fibers, and duplicated ATM connectivity 
hardware. 
Figure 16. ATM Network Duplication Configuration with Simplex SPE 
						

							What’s New in DEFINITY ECS
Release 8.2 Job Aid  555-233-754  Issue 1
April 2000
Networking Enhancements 
246 Networking - ATM 
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nBoth an expansion control carrier and a port carrier are required in each 
EPN. 
nEach of the two TN2305 or TN2306 ATM interfaces and tone clocks are 
placed in each of the two carriers. 
nA TN771 facility test circuit pack is required in each port network of a R8r 
system equipped for ATM Network Duplication. DEFINITY® system 
software does not prevent placement of 2 ATM Interfaces in the same 
expansion control carrier or port carrier in an ATM Network Duplication 
EPN. 
— Software does not require that 2 tone clocks be used in an ATM 
Network Duplication EPN.
nThe PPN in a R8r ATM Network Duplication configuration always has only 
one SPE complex, which is placed in the A cabinet position of an MCC 
Cabinet. 
— The two required ATM Interfaces in the PPN may both be placed in a 
port carrier in the B position in slots 2 and 3. One may be placed in 
the B position port carrier in slot 2 and one may be placed in a C 
position port carrier in slot 2.
nDirectly connected port networks are not supported in an ATM PNC 
arrangement and are not supported for ATM Network Duplication.
Implementation
nCustomers with systems equipped with high reliability (duplex SPE 
complexes) and who desire greater reliability will migrate to critical 
reliability. 
Procedure 
nThe command change system parameters customer-options is executed. 
This will bring up the OPTIONAL FEATURES form. On page 2 of the form 
is the field PNC Duplication. Enter y to enable PNC duplication for the 
Network Duplication configuration.
nInsert the second TN2305 or TN2306 ATM Interface in slot 2 of the B 
position port carrier in each EPN. A TN2182 tone clock must also be 
present in the slot labeled “tone clock” of the A and B position carriers. 
Alternatively, the ATM interface and tone clock circuit packs can be 
administered in software (without hardware insertion) via the standard 
DEFINITY
® system change circuit-packs  command, for 
example change circuit-packs 2.
nThe ATM B-PNC address information is then added via the change atm 
pnc  command, where  represents the connection number 
assigned to each EPN being administered. This will bring up the ATM PNC 
form. 
						

							What’s New in DEFINITY ECS
Release 8.2 Job Aid  555-233-754  Issue 1
April 2000
Networking Enhancements 
247 Networking - ATM 
2
nOnce the ATM Interfaces, tone clocks, and ATM B-PNC addresses have 
been administered for all EPNs, the change system-parameters duplication 
command is issued. This brings up the DUPLICATION-RELATED SYSTEM 
PARAMETERS form. The Enable Operation of PNC Duplication? option is 
then changed to y. The option for Enable Operation of SPE Duplication? 
must remain as n.
System Parameters Customer-Options, Page 2
Page 2 of 5
OPTIONAL FEATURES
                         ISDN-BRI Trunks? n     Restrict Call Forward Off Net? n
                                ISDN-PRI? n             Secondary Data Module? y
                                                       Station and Trunk MSP? n
                    Malicious Call Trace? n               Tenant Partitioning? n
                     Mode Code Interface? n       Terminal Trans. Init. (TTI)? n
                Multifrequency Signaling? y               Time of Day Routing? n
Multimedia Appl. Server Interface (MASI)? n              Uniform Dialing Plan? n
        Multimedia Call Handling (Basic)? n     Usage Allocation Enhancements? n
     Multimedia Call Handling (Enhanced)? n
                      Multiple Locations? y                Wideband Switching? n
           Personal Station Access (PSA)? n                          Wireless? n
                          PNC Duplicaton? y
                Processor and System MSP? n
                      Private Networking? n
           (NOTE: You must logoff & login to effect the permission changes.)
Command:
ATM PNC Form - PN With Network Duplication
ATM PNC
                                Connection Number: 12
                 A - PNC                                     B - PNC
            Location: 02A01                              Location: 02B02
                Name: 123456789012345                        Name: 123456789012345
      Address Format: E.164 ATM Private            Address Format: E.164 ATM Private
                 AFI: 45                                      AFI: 45     
               E.164: 1234567890123456                      E.164: 1234567890123456
              HO-DSP: 12345678                             HO-DSP: 12345678
                 ESI: 123456789012                            ESI: 123456789012
                 SEL: 12                                      SEL: 13
Command: 
						

							What’s New in DEFINITY ECS
Release 8.2 Job Aid  555-233-754  Issue 1
April 2000
Networking Enhancements 
248 Networking - ATM 
2
Duplication configuration
Steps
nbusyout pnc-standby
nchange sys dup (turn off PNC duplication)
nreplace boards on the standby PNC
nchange sys dup (turn on PNC duplication)
nreset pnc interchange
nrepeat above with other side
nsave translations
Upgrades
nTN2305/TN2306 ATM interfaces can be used for R8r ATM PNC 
capabilities. 
nThe TN2305/TN2306 ATM Interfaces must be used with ATM CES, with 
ATM WAN PNC, and if multiple ATM switches are used. Duplication-Related System Parameters Form
Page 1 of 1
                    DUPLICATION-RELATED SYSTEM PARAMETERS
             Enable Operation of SPE Duplication? n
             Enable Operation of PNC Duplication? y
Command: 
						

							What’s New in DEFINITY ECS
Release 8.2 Job Aid  555-233-754  Issue 1
April 2000
Networking Enhancements 
249 Networking - ATM 
2
Interworking with Bandwidth Constricted ATM 
Networks
Conserving ATM Bandwidth Introduction
This is a recommendation to allow DEFINITY® R8r systems using ATM Port 
Network Connectivity to perform optimally when bandwidth is at a premium. 
nATM bandwidth can be conserved, where possible, through optimal 
DEFINITY® resource allocation.
— Resources that can be optimally placed can include general 
purpose tone receivers, TN750/B/C multiple announcement boards, 
and TN771 maintenance test boards. 
nWhen DEFINITY® is used together with access concentrators or other ATM 
switches interfacing to bandwidth constricted or congested facilities on an 
ATM Wide Area Network call-processing performance can degrade. 
nWhen SVC failures or delays occur more often than normal in a 
DEFINITY® ATM PNC environment, the ATM Network that is out of spec. 
— The solution is to provide tools to manage DEFINITY
® and the ATM 
network  so that out-of-spec conditions in the ATM network can be 
detected early, and the network can be restored as quickly as 
possible. 
nPossible strategies entail: 
— Alarming of out-of-spec conditions
— Detailed SVC latency measurements
— Providing options to either allow or deny completion of calls that 
would require a SVC between endpoints which recently experienced 
a high number of delayed or failed SVCs
Interworking with Bandwidth Constricted 
Networks
nPor t Networks in a DEFINITY® ATM PNC configuration, when used 
together with access concentrators, or other ATM switches interfacing to 
bandwidth constricted or congested facilities on an ATM Wide Area 
Network, could incur contention for bandwidth, resulting in failed call 
completion
nNetwork throughput  with DEFINITY® system connections to an ATM 
Backbone Switch and to the ATM Access Concentrator via the TN2305 or 
TN2306 ATM interfaces and fiber optic cable is less than OC-3 bandwidth.
— A few DS1/T1/E1 links are used in the IMA arrangement instead of 
full OC-3s.  
						

							What’s New in DEFINITY ECS
Release 8.2 Job Aid  555-233-754  Issue 1
April 2000
Networking Enhancements 
250 Networking - ATM 
2
nATM-PNC operation is the same from the DEFINITY® system perspective 
as if OC-3 is deployed end-to-end, except when traffic exceeds the carrying 
capacities of the IMA links, and contention occurs. 
— Similar to what occurs in an ATM network arrangement where IMA is 
not used but bandwidth is constricted over the ATM network when 
congestion occurs as the result of traffic over the WAN between 
destinations other than DEFINITY
® endpoints. 
— The DEFINITY
® system must coexist with other applications over 
ATM networks. 
nSVC setups requested by the DEFINITY® system may be 
denied by the ATM network and associated components, and 
calls are not completed.
Bandwidth Constricted Network
Example
nPrior to R8.1, when a call is to be extended between PNs distributed over 
an ATM network, a CCMS message to provide ringing at the destination is 
sent after the actual SVC setup, but before the SVC connect or release. 
— Until the call is completed, the calling party hears ring back.
nIt is possible that the CCMS message goes through and the SVC cannot 
be established or is delayed. 
nThe incidence of SVC setup latency has been observed to increase 
exponentially when very high rates of calls are simulated
— This would be the equivalent of what would be 280,000 BHC over an 
EI pair if the rate persisted for an hour.
Improved Resource Allocation
nATM bandwidth can be conserved, where possible, through optimal 
DEFINITY® resource allocation.
— Resources that can be optimally placed can include general 
purpose tone receivers, TN750/B/C multiple announcement boards, 
and TN771 maintenance test boards. 
nR8r can support up to 10 TN750/B/C integrated announcement boards. 
nWhen an announcement port on one of these boards must be bridged to a 
call, an ATM SVC connection is required if the integrated announcement 
board is located in a PN other than where the call is connected. 
— If the integrated announcement board is not at the same location as 
where the call is connected, a SVC across the ATM WAN is 
incurred. 
— If the integrated announcement board is at the same location as the 
call, a SVC does not incur service provider billing.  
						

							What’s New in DEFINITY ECS
Release 8.2 Job Aid  555-233-754  Issue 1
April 2000
Networking Enhancements 
251 Networking - ATM 
2
nIntegrated announcement board resources are associated with extension 
numbers and are often triggered by vector directory numbers (VDNs). 
nR8r can be traffic engineered and administered to minimize the number of 
the expensive SVCs using existing software.
nIn a large ATM PNC system distributed over many locations, use of 15A 
announcement units may be preferable to the use of TN750/B/C. 
— 15A units are connected to analog station or aux trunk ports. 
nMultiple units can provide far greater message capacity than 10 integrated 
announcement boards. 
nIt may be desirable to enhance DEFINITY® software so that the number of 
integrated announcement boards could be increased.
Performance Management Approach
nWhen SVC failures or delays occur more often than normally in a 
DEFINITY® ATM PNC environment, this is thought to be evidence of an 
ATM Network that is out of spec. 
— Hard to predict all of the consequences of a degraded ATM network 
on the DEFINITY
® system, 
— It is difficult to predict the effects that could be evidenced when a 
DEFINITY
® system processor overload occurs. 
nDegraded conditions need to be avoided, as opposed to learning how to 
live with undesirable circumstances. 
nEnhancements include the ability to set thresholds for alarms related to 
SVC setups, detailed error logs, and new parameters for the determination 
of state of health. 
nIntended that these capabilities will provide administrators with an 
enhanced ability to isolate, diagnose, and correct problems quickly.
Serviceability Considerations
nThis feature is intended to improve serviceability. 
nAdditional ATM PNC alarm reporting and monitoring capabilities are 
included. 
nOf concern is that customers may set alarm repor ting thresholds too low, 
resulting in an increase of alarms. 
— When an alarm is cleared, ancillary actions will be required in the 
ATM network. 
						

							What’s New in DEFINITY ECS
Release 8.2 Job Aid  555-233-754  Issue 1
April 2000
Networking Enhancements 
252 Networking - ATM 
2
Improved Resource Allocation
nATM bandwidth can be conserved, where possible, through optimal 
DEFINITY® resource allocation. 
— Resources that can be optimally placed can include general 
purpose tone receivers, TN750/B/C multiple announcement boards, 
and TN771 maintenance test boards. 
nR8r can support up to 10 TN750/B/C integrated announcement boards. 
— SVC connection is required if the integrated announcement board is 
located in a PN other than When an announcement port on one of 
these boards must be bridged to a call, an ATM where the call is 
connected. 
— If the integrated announcement board is not at the same location as 
where the call is connected, a SVC across the ATM WAN is 
incurred. 
— If the integrated announcement board is at the same location as the 
call, a SVC does not incur service provider billing. 
nIntegrated announcement board resources are associated with extension 
numbers and are often triggered by vector directory numbers (VDNs). 
nR8r can be traffic engineered and administered to minimize the number of 
the expensive SVCs using existing software.
Restarts
nOn HOT and SINGLE PROCESS restarts, all impairments, active setup 
events and alarms are retained. 
nOn WARM, COLD-2, COLD-1, COOL, REBOOT and EXTENDED 
REBOOT restar ts, all impairments, active setup events, IMP alarms, and 
system setup alarms are cleared.
Transmission Interface
nTN2305/TN2306 ATM Interfaces may be used for R8r ATM PNC 
capabilities. 
nThe TN2305/TN2306 ATM Interfaces must be used with ATM CES, with 
ATM WAN PNC, and if multiple ATM switches are used.
SETTING THRESHOLDS
nAlarm thresholds are meant to be used for service-affecting conditions 
only. 
nIf the system setup alarm is raised, but no individual ATM-IMPs are also 
alarmed, it is likely that the Activation threshold has been set too high.  
						

							What’s New in DEFINITY ECS
Release 8.2 Job Aid  555-233-754  Issue 1
April 2000
Networking Enhancements 
253 Networking - ATM 
2
nTechnicians should consider lowering the Activation threshold, and raising 
the delay time threshold. 
nIf an ATM-IMP becomes alarmed unnecessarily, it is preferable to raise the 
delay threshold rather than raising the Activation threshold.
System Setup Alarms
nA System SETUP alarm uses the existing MO_ATM_IMP maintenance 
object. 
— Reported as either a minor type alarm or a warning type alarm as 
determined by the Off-board ATM Network Alarms setting on the 
Alarm Reporting Options forms and is defaulted to a warning alarm. 
nReported as ATM-NTWK on the ALARM REPORT and HARDWARE 
ERROR REPORT forms. 
nWhen the number of active SETUP events for all paths becomes greater 
than 1,500, the System SETUP alarm is raised.
— The ATM network is alarmed with a warning or minor alarm.
nResolved when the number of active SETUP events for all paths becomes 
less than 1,400. 
nSpecial physical name of AT00 is used for this alarm/error.
nIf the alarming percentage  is 6% and 4 active events for each of 375 
ordered pairs exist, the next event is the 1501st event and causes the 
system alarm, even though none of the individual ordered pairs had yet 
gotten to 6%. 
— Selection for Activation (%) on the ATM-RELATED SYTEM 
PARAMETERS form)
— Interpreted to mean that so many events occurred that the system 
lost its ability to monitor the percentage of delays and failures on 
individual connections. 
nA system alarm is created.
nThe system alarm is what might be considered an alarm for 
non-specified connections.
— Indicates that network problems may go uncleared. 
nIf the alarm appears frequently, the administrator may consider changing 
the threshold.
Set Options Command
nThe set options command can be used to change off board ATM Network 
alarms from warning to minor or from minor to warning. 
nThis form is displayed via the set options command.  
						

							What’s New in DEFINITY ECS
Release 8.2 Job Aid  555-233-754  Issue 1
April 2000
Networking Enhancements 
254 Networking - ATM 
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nThe Off board ATM Network Alarms field will appear regardless of the 
option for ATM PNC, but will not appear if the system is a csi or si.
nThe set options command can change alarm levels. 
nProvides the ability to downgrade the off board ATM-NTWK alarm level 
from minor to warning level, or vice versa.
Administration
SVC SETUP Alarming Maintenance Object
nAlarms generated due to impaired paths utilize the existing MO_ATM_IMP 
maintenance object.
SVC Setup Event Alarm Reporting
nATM-IMP alarms are reported as either a minor type alarm or a warning 
type alarm as determined by the Offboard ATM Alarms setting and are 
defaulted to a warning alarm. 
nThese alarms are reported as ATM-NTWK alarms on the ALARM REPORT 
and HARDWARE ERROR REPORT forms.
New Commands
nAccess to all the new commands may be blocked for a given login by 
administering the Additional Restriction system-atm on the logins 
permissions form. 
— Change Command
nAuthorization: Administer Features
nSyntax: change system-parameters atm
nHelp: Entry is not required
nErrors: 
nDisplay Command
nAuthorization: Display Admin. and Maint. Data
nSyntax: display system-parameters atm [“print” or “schedule”]
nHelp: [“print” or “schedule”]
nErrors:   is an invalid identifier; please press HELP
ATM PNC LATENCY HISTOGRAM Form
nThis form is accessed with the command list measurements atm latency-
histogram [current-hour, last-hour, today-total, and yesterday-total].