![background image](http://html.mh-extra.com/html/huawei/u-sys-iad208e/u-sys-iad208e_user-manual_170219018.webp)
User Manual
U-SYS IAD208E(M) Integrated Access Device Chapter 1 System Overview
Huawei Technologies Proprietary
1-3
SoftSwitch
AMG
SG
iOSS
IAD208
AAA
3rd party server
MRS
Ephone
phone
fax
PC
TMG
SIP
多媒体终端
phone
fax
PC
PSTN
SoftSwitch
TMG
IP Network
iOSS: integrated operation support system
AAA: authentication, authorization and accounting
SCP: service control point
3rd Party Server: 3rd party
server
MRS: media resource server
Ephone: Ethernet phone
SG: signaling gateway
TMG: trunk media gateway
AMG: access media gateway
IAD: integrated access device
Figure 1-2
Location of the IAD208E(M) in NGN