3Com MSR 50 Series Configuration Manual page 2290

2290 C 133: D P
HAPTER IAL
C
LAN ONFIGURATION
Figure 665 Dial plan process on the calling side
Local voice
subscriber line
Voice
subscriber line
Global
Select a
Voice entity
voice entity
Initiate a call(called number )
1 The voice gateway on the calling side substitutes the calling/called number on the
subscriber line according to the number substitution rule.
2 The voice gateway performs global number substitution.
3 The gateway selects a proper voice entity based on the voice entity selection
priority rules and substitutes the calling/called number.
4 The gateway initiates a call to the called side and sends the calling/called number.
On the called side
Figure 666 shows the dial plan process on the called side.
PSTN PSTN
Processing sequence
Number
substitution
Subscriber
line
Number
substitution
Global
Number
substitution
Voice entity
on calling side