Alcatel 060170-10, User Manual, Page: 109 / 430

VoIP Networks with PSTN — Example 16
Page 3-45
VoIP Networks with PSTN — Example 16
FAX over IP Network
This dialing scheme is used to create a homogeneous Fax Over IP network, i.e. a network
wherein no voice traffic per se is processed by the VoIP network. In the event of a digital
voice daughtercard power failure, the Deadman relay switch on the card goes into PSTN fall-
back mode to allow new, incoming calls to be placed. For more details on the Deadman
switch, see Chapter 2, “Voice Daughtercards.”
To use voice and fax on the VoIP network simultaneously, the fax/modem switchover feature
must be turned ON via the
voice coding profile switchover
command; otherwise, voice calls will
fail. See Chapter 5 “VoIP Commands,” for details.
Example 16 — Fax over IP Network
LEGEND for Diagram Components
PBX #1 Configuration PBX #2 Configuration
— Expects to receive eleven digits on trunk (J), and
then uses these digits to route calls to lines (A) .
— Expects to receive eleven digits on trunk (L), and
then uses these strip digits to route calls to lines (B) .
— Routes calls starting with 1-603-598 to trunk (J) , and
then the VoIP network uses these digits to route calls
to trunk
(L) . If the voice daughtercard loses power,
calls will be routed using PSTN fallback to trunk (R) .
— Routes calls starting with 1-818-878 to trunk (L) , and
then the VoIP network uses these digits to route calls to
trunk
(J) . If the voice daughtercard loses power, calls
will be routed using PSTN fallback to trunk (T) .
Extensions
off of PBX #1 (A)
(J)
(B)
(L)
PBX #1
PBX #2
(R)
(T)
Voice
Daughtercard
#1
IP 192.168.11.2
Port 1720
Voice
Daughtercard
#2
IP 192.168.12.2
Port 1720
WAN
PSTN
T1
T1
T1
T1
Extensions
off of PBX #2
1-818-878-2999
1-603-598-2999