Meridian America 21 Manual De Usuario

3-12 Provisioning guidelines

The values obtained through any of the three previous methods should now
be entered on Worksheet A (provided at the end of this document).

Add

your calculations to the worksheet. Once the trunk 

 is known, and a

grade of service has been specified by the customer, the number of trunks
required per trunk group to meet the cutover, 2-year and 
requirements of a customer can be determined as follows:

The customer requires a Poisson 1% blocking grade of service (see Table
3-A at the end of this document). The estimated trunk 

 is 1.14 for a

DID trunk group. With the cutover, 2-year and 5-year number of lines, the
total trunk CCS is determined by multiplying the number of lines by 

 

Cutover 275 (lines) x 1.14 (trunk 

   313.5 CCS

2 year 304 (lines) x 1.14 (trunk

= 346.5 CCS

---

5 year 352 (lines) x 1.14 (trunk

= 401.28 CCS

Use Table   1 to determine the quantity of trunks required to meet the trunk
CCS at cutover, 2-year and 

 interval. In this case:

17 DID trunks are required at cutover

18 DID trunks are required at 2 years

21 DID trunk are required at 5 

Note: For trunk traffic greater than 4427 ccs, allow 29.5 

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