Huawei Technologies Co. Ltd EM820W 사용자 설명서
As shown in
, the enterprise headquarters and branch A use different number
segments. The ARs working in IP PBX mode are deployed at the enterprise headquarters and
branch A as egress routers. Voice users in the enterprise headquarters are registered with the AR
in the enterprise headquarters, and voice users in each branch are registered with the AR in the
branch. Voice traffic is transmitted between the enterprise headquarters and branches over voice
routes. The AR of the enterprise headquarters provides voice routes to branches so that users in
different branches can call each other.
branch A as egress routers. Voice users in the enterprise headquarters are registered with the AR
in the enterprise headquarters, and voice users in each branch are registered with the AR in the
branch. Voice traffic is transmitted between the enterprise headquarters and branches over voice
routes. The AR of the enterprise headquarters provides voice routes to branches so that users in
different branches can call each other.
Branch B and the enterprise headquarters are connected through the MAN. An AR working in
IP PBX mode is deployed at the enterprise headquarters and an AR working in SIP AG mode
is deployed at branch B. All voice users at the enterprise headquarters and branches are registered
with the AR at the enterprise headquarters. The AR in the enterprise headquarters provides call
control services for all users in the enterprise.
IP PBX mode is deployed at the enterprise headquarters and an AR working in SIP AG mode
is deployed at branch B. All voice users at the enterprise headquarters and branches are registered
with the AR at the enterprise headquarters. The AR in the enterprise headquarters provides call
control services for all users in the enterprise.
Figure 2-4 Voice application
Analog phone
FAX
IP phone
PC software
terminal
Analog phone
IAD
FXS
FXS
Eth
Eth
Eth
FAX
IP phone
PC
software
terminal
FXS
Eth
Eth
Eth
TDM PBX
Intranet
IPPBX
IPPBX
Branch A (distributed call
control model)
control model)
Headquarters
Analog
phone
FAX
IP phone
PC software terminal
FXS
E1
Eth
Eth
SIP AG
Branch B (centralized call control model)
FXS
Eth
PSTN
IMS/IP
Eth
Eth
FXS interface
FXO interface
E1 interface
Ethernet interface
Eth
FXS
Eth
Eth
FXS
FXS
FXO
FXO
E1
2.5 FTTx
By working with the optical line terminal (OLT), the ARs function as optical network unit (ONU)
to provide fiber access to the enterprise. As shown in
to provide fiber access to the enterprise. As shown in
, the ARs are connected to
upstream devices through a passive optical network (PON), and provide fiber-to-the-home,
fiber-to-the-building, and fiber-to-the-enterprise services.
fiber-to-the-building, and fiber-to-the-enterprise services.
Huawei AR G3 Series Enterprise Routers
Product Description
Product Description
2 Network Applications
Issue 02 (2012-04-20)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
8