Call routing procedure on outgoing calls
| |
User
|
dials
|
correct call route
|
correct user
|
mapping, number in use
|
Destination line
|
|---|
| |
VoIP telephone
|
*14
|
*#
|
VoIP softphone
|
#: 14
|
Internal
|
| |
VoIP telephone
|
*11
|
*#
|
ISDN users
|
#: 11
|
ISDN
|
- Internal call between two VoIP terminal devices. On the first pass,
only the star is removed from the number, the source line is deleted.
During the second pass, no other route matches this call but the Call
Router finds a matching entry for a SIP user in the list of registered
users and can complete the call.
- Internal call from VoIP to ISDN. On the first pass, the star is removed
from the number again, the source line is deleted. During the second
pass, no other route matches this call but the Call Router finds a matching
entry for an ISDN user in the list of registered users and establishes
the call via the ISDN interface configured for this user. The destination
number is replaced by the MSN entered for this user '555 555 1' . The
PBX receives the call to '555 555 1' on its external ISDN bus and again
determines that this is an external MSN and can channel the call to the
corresponding ISDN telephone.