Installing and Administering OSI Transport Services

Chapter 1 61

HP OTS/9000 Resources

Building Temporary Administrative Preﬁxes

As an example, suppose Joe’s Grommet Shop decides not to obtain an

ANSI Org Id at this time. Instead, they use the E.163 format. The

network administrator decides to use the International Telephone

Number of their customer order department for the IDI value.

Figure 1-19

Use an X.121 Address

Another option is to use an X.121 address as the IDI value. The AFI for

this format is 37. The IDI is up to 14 BCD encoded digits, with any

extras padded with F. The DSP, and therefore the PAP, may be up to 12

octets in length. Note that the X.121 address is only used to uniquely

identify the customer’s AP. It does not have any routing signiﬁcance in

this example.

Figure 1-20

For instance, Joe’s Grommet shop decides to use one of its public X.121

address for the IDI value.

Figure 1-21

43 114085551122

IDP

DSP

PAP

37 X.121 Addr

IDP

DSP

PAP

up to 12 octets

37 10122334444FFF

IDP

DSP

PAP