Huawei U-SYS IAD208E User Manual page 18

User Manual
U-SYS IAD208E(M) Integrated Access Device Chapter 1 System Overview
SoftSwitch
IP Network
TMG TMG
PSTN
iOSS: integrated operation support system
AAA: authentication, authorization and accounting
SCP: service control point
MRS: media resource server
SG: signaling gateway
AMG: access media gateway
Figure 1-2 Location of the IAD208E(M) in NGN
AAA
iOSS
SG
AMG
phone fax
Huawei Technologies Proprietary
1-3
3rd party server
MRS
SoftSwitch
PC
phone
3rd Party Server: 3rd party
server
Ephone: Ethernet phone
TMG: trunk media gateway
IAD: integrated access device
SIP
多 媒 体 终 端
Ephone
IAD208
fax
PC