2.2.1 TIF NS Message Flows

The following figure shows CgPN and CdPN substitution in an ISUP IAM Relay call flow.

Figure 2-11 ISUP RELAY with TIF NS

The following figure shows the ISUP IAM Relay call flow where CdPN is substituted and CgPN is not substituted.

Figure 2-12 ISUP RELAY with TIF NS - No CgPN Substitution

The following figure shows the ISUP IAM Relay call flow where CgPN is substituted and CdPN is not substituted.

Figure 2-13 ISUP RELAY with TIF NS - No CdPN Substitution