Softswitch…
•
As a SoftSwitch product, SoftX3000 is located at the core
control layer of NGN scheme.
•
SoftX3000 acts as a generic Call Controller in the packet-
switched network, supports the interworking between
PSTN, H.323, SIP, and MGCP domains.
•
SoftX3000 provides H.248 and MGCP based bearer
control.
•
In the NGN solution of Huawei, SoftX3000 acts as the
core of NGN, interworking with other NGN components
through the open network adopting distributed standard
protocols.
PTCL Training & Development
1
Location of SoftX3000
• SoftX3000 is applicable to the
network control layer of NGN
and implements call control
and connection management
of voice, data and multimedia
services based on the IP
network.
2
Control Function Of S.Switch
SoftSwitch
SoftSwitch
Call control path
IP Core Network
Talking Path
IAD
Broadband
Access
UMG
AMG
SG
PSTN
TMG
3G Access
UMG
PLMN
3
Next Generation Voice Switching the
“Softswitch” concept
Soft switches are software-based
multi-function network gateways
(running under Unix or Windows)
that act as interfaces between
circuit switched and packetswitched networks
4
Role of a Softswitch

Provides the call control and the
Media Gateway control for the NGN

The name softswitch is used
because many switching functions
handled
by
large
monolithic
systems in the circuit switched
world are instead emulated by
software systems.

The term Softswitch refers to a Call
agent or a Media Gateway Control
(MGC)
5
Role of a Softswitch
Softswitch
Media Gateway
Control
Signaling
MGW
IP Core
MGW
6
Softswitch System Architecture
Key components of softswitch architecture are:
• Call agent / Call controller: it performs call control
functions
• Application Server (AS) provides enhanced
features which is not available in Softswitch host.
• Operating Support System (OSS) as network
management, billing support, etc.
• Signaling Gateway (SG) as interface to CCS-7
(STP)
• Trunk Gateway (TG) as interface to TE or LE of
PSTN
• Access Gateway (AG) as interface to CPE
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Softswitch Functions
The main functions are:
• Call control
• Media gateway access control
• Protocol processing
• Routing
• Authentication
• Charging
• Application Programming Interfaces (API) for
3rd party Servers
8
Softswitch Services
• Softswitch can be used as an end office
(C5 office), tandem office (C4 office),
toll office, International gateway office
and IN SSP
• Voice services
– Basic voice services
– Supplementary Services
• IP fax services
• IP CENTREX services
• Multimedia services
• IN services
9
Softswitch Service Provisioning
• Basic and Supplementary Services
– Abbreviated Dialing, Automatic call back, Alarm
ring service, Call waiting, Three-way call and
Centrex, etc.
• Traditional IN services
– 300, 800, Account card service, etc.
• New Revenue generating services
– Web 800, Click to dial, Web Service Customization,
Synchronization browsing, One Number, Voice
Mail, Unified Message (UMS), Short Message.
• Video and Multi-media services
– Video phone, multi-media TV conference.
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Huawei Softx3000 Softswitch

Legacy Switch



SoftX3000
High Capacity & Integration
 2,000,000 POTS
 2,000,000 V5 Subscribers
 2,000,000 SIP Terminals
 1,000,000 H.323 Terminals
High Performance
 16M BHCA
Perfect Scalability
 150,000 subs / frame and
smoothly expansion
Fewer power Consumption
 Power consumption <
4.5KW
Big Saving of 40% OPEX !
Nodes, Space, Power, Staffs……
11
Softswitch Networking Solutions
• Long Distance VoIP Solution with
Softswitch + Trunk Gateway
configuration for long distance VoIP
service.
• Local VoIP Solutions with Softswitch +
Media Gateway, Softswitch+IAD、
Softswitch+AccessGateway,
Softswitch+Intelligent Terminals for local
VoIP and Data services.
• Flexible access solution for group
subscribers such as school, enterprise,
government institute depending on
network condition and accessing scale.
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SoftSwitch as a Class 5 Solution
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Soft Switch as a Class 4
Route/Policy
Service
AppServer
IN
INAP
PARLAY
/SIP
LDAP/
TRIP
SNMP
SIP-T/BICC
SoftX3000
H.248/
SIGTRAN
SoftX3000
H.248/
SIGTRAN
Packet/TDM
bearer netwrk
SS7/PRI/R2
UMG8900
Switch
NMS
SS7/PRI/R2
UMG8900
Switch
PSTN
PSTN
14
Interface and Protocol
• An interface is the connection point
between two adjacent network entities,
and a protocol specifies the principles to
be
followed
interchanging
for
over
such
information
connection
points (interfaces)
• Different protocols are usually used on
different interfaces and maybe on the
same interface as well.
15
Soft Switch Interfaces and Protocols
MRS
MML/SNMP MGCP
APP Server
SCP
FTP/FTAM
NMS
SIP
BC
SIP
H.323
H.323
SIP
SS7
Soft Switch
SoftSwitch
PSTN
SIGTRAN
SG
MGCP/SIP/H.323
EPhone
H.248
TMG
AMG
IAD
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SoftX3000 Signaling Classification
•
Signaling transport protocol – Signaling transport layer
protocol provides SoftX3000 with signaling transport services.
These are MTP (PSTN), INAP (IN), M2UA,M3UA (User adaption
layer protocols for MTP2 & MTP3),SCTP etc.
•
Bearer control protocol - is a kind of master/slave protocol
used for Media Gateway Controller (MGC) to control Media
Gateways (MGs) from external call elements like a Call Agent
(SoftX3000). Example is MGCP and H248(MEGACO).
•
Call control protocol – A protocol used to control call setup,
connection and termination. The call control protocols used in
SoftX3000 are ISUP of SS7 & for switched circuit network, SIP
and H.323 for call control in packet switched networks.
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