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Oracle® Communications EAGLE SIGTRAN User's Guide
Release 46.6
E97352 Revision 1
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Adjusted transaction unit

The adjusted transaction unit is the value calculated and tested by Oracle that represents additional cost per base transaction unit when the configuration deviates from the base configuration.

Configuration scenarios and their TU values for IPGWx (M3UA), IPLIMx (M2PA) and IPSG (M3UA and M2PA) are shown in Table 5-9, Table 5-10, and Table 5-11. For more information on calculating throughput based on transaction units, see How to calculate transaction units per second (TPS).

Note:

When computing TU cost for configuration attributes such as size and number of connections/links on IPSG cards the TU used will be from Table 5-10 or Table 5-11, depending on whether an E5-ENET or E5-ENET-B card is used and the status of the E5-ENET-B IPSG High Throughput feature.

Table 5-9 Additional IPLIMx/IPGWx Transaction Units for Advanced Configurations

MSU SIF Size Adapter Moni- tored E5IS Data Feed Number of Open ConnsFoot 1 SLAN and/or SCCP Conver- sion Base TU TU Adjust- ment Total TU Max MSU/s 2000 Max MSU/s 4000
0..140 M3UA Yes <= 8 No 1.0 0.43 1.43 1400 2800
0..140 M3UA Yes <= 8 Yes 1.0 0.67 1.67 1200 2400
0..140 M3UA Yes > 8 No 1.0 0.82 1.82 1100 2200
0..140 M3UA Yes > 8 Yes 1.0 1.00 2.00 1000 2000
141..272 M3UA Yes <= 8 No 1.43 0.80 2.23 900 1800
141..272 M3UA Yes <= 8 Yes 1.43 1.24 2.67 750 1500
141..272 M3UA Yes > 8 No 1.43 1.65 3.08 650 1300
141..272 M3UA Yes > 8 Yes 1.43 1.91 3.34 600 1200
0..140 M2PA Yes <= half max per card No 1.0 0 1.00 2000 4000
0..140 M2PA Yes <= half max per card Yes 1.0 0.38 1.38 1450 2900
0..140 M2PA Yes > half max per card No 1.0 0.11 1.11 1800 3600
0..140 M2PA Yes > half max per card Yes 1.0 0.54 1.54 1300 2600
141..272 M2PA Yes <= half max per card No 1.0 0.54 1.54 1300 2600
141..272 M2PA Yes <= half max per card Yes 1.0 1.00 2.00 1000 2000
141..272 M2PA Yes > half max per card No 1.0 0.67 1.67 1200 2400
141..272 M2PA Yes > half max per card Yes 1.0 1.11 2.11 950 1900

Footnote 1 Open Connections and Active SLKs are not always synonymous, depending on the GPL. For IPLIM, one SLK equals one connection. For IPGW, one SLK can equal up to 50 connections. For IPSG, one connection equals at least one SLK.

Additional Transaction Units cost enforced by the IPSG application per Transaction for an E5-ENET-B card when the E5-ENET-B IPSG High Throughput feature is turned off, an E5-ENET card is shown in Table 5-10.

Table 5-10 IPSG Additional Transaction Units for Advanced Configurations (E5-ENET-B when IPSG High Throughput Feature OFF, E5-ENET)

Configuration Attribute Average MSU SIF Size Transaction Unit Adjustment (per MSU with attribute) Transaction Unit Cost (per MSU with attribute)
MSU Size 0..160 0 1.0
161..272 0.15 1.15
More than 16 open IP connections on IPSG card 0..272 0.135 * INT (# of connections / 16) 1 + (.135 * INT(# of connections / 16)
MSU triggers enabled SCCP Class-1 Sequencing feature 0..272 0.2 1.2
MSU triggers SLAN copy 0..272 0.00143 * MSU Size 1 + (0.00143 * MSU Size)
MTP-routed SCCP Conversion feature enabled 0..272 0.00143 * MSU Size 1 + (0.00143 * MSU Size)
MSU is copied by E5IS Data Feed 0..272 0.43 1.43
MSU is copied by Fast Copy 0..272 0 1.0

Additional Transaction Units cost enforced by IPSG application per Transaction when the E5-ENET-B IPSG configuration deviates from the configuration described in Table 5-5 and the E5-ENET-B IPSG High Throughput feature is turned on are shown in Table 5-11.

Note:

When calculating the values for the Average MSU SIF size >120, Number of Links >4, and Association RTT > 50, the values from the division in the formula are rounded to the quotient. In addition, the final values for the Transaction Unit Adjustment and Transaction Unit Cost values for Average MSU SIF size are rounded to the nearest 10 value if the delta is not a multiple of 10.

Table 5-11 IPSG Additional Transaction Units for Advanced Configurations (E5-ENET-B IPSG High Throughput Feature ON)

Configuration Attribute Attribute Value Transaction Unit Adjustment (per MSU with Attribute) Transaction Unit Cost (per MSU with Attribute)
Average MSU SIF size >120 bytes 121-272

M2PA: (RoundUp((Average MSU size – 120)/10))) * 0.012

M3UA: (RoundUp((Average MSU size – 120)/10)) ) * 0.02

M2PA: 1 + (RoundUp((Average MSU size – 120)/10))) * 0.012)

M3UA : 1 + (RoundUp((Average MSU size – 120)/10))) * 0.02)

Number of links > 4 5 - 32 (RoundDown((Number of links – 1)/4))) * 0.025 1 + (RoundDown((Number of links – 1)/4))) * 0.025)
Association RTT > 50 ms 51 - 200 ms (RoundDown(Association RTT / 25)) * 0.04 1 + (RoundDown(Association RTT / 25)) * 0.04)
Protocol M3UA 0.05 1.05
For an E5-ENET-B IPSG Capacity calculation with the E5-ENET-B IPSG High Throughput feature turned on, the total TU adjustments factors should be derived by adding TU factors for each of the following as applicable:
  • Additional features such as SCCP Class-1 Sequencing, SLAN/IMF copy, SCCP conversion as shown in Table 5-10
  • Large MSU as shown in Table 5-8
  • Configuration above baseline as shown in Table 5-11