Calculation example

This example uses a IPLIM or IPGW card. Refer to Table 5-12 to follow this calculation:

• The signaling link is being monitored by E5IS (Data Feed) (A3, B3).
• Fail traffic uses M3UA adapter (A2, B2).
• Eight IP connections are open and allowed (A4, B4).
• Eighty percent of traffic involves ISUP MSUs having a SIF size less than or equal to 140 bytes (80% of A8).
• Twenty percent of traffic involves SCCP-converted MSUs having a SIF size greater than 140 bytes and less than or equal to 272 bytes (20% of B8).

(Base Advertised Capacity) =

((0.80 * (1.43)) + (0.20 * (2.67)) * (Actual Advertised Capacity)=

(1.14 + 0.53) * (Actual Advertised Capacity)=

1.67 * (Actual Advertised Capacity)

(Actual Advertised Capacity)= (Base Advertised Capacity) / (1.14 + 0.53)= 4000 / 1.67 = 2395

Once the needed throughput is established, calculate the number of cards required to support this need (see Calculate the Number of Cards Required).