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VoIP Voice Gateway Series

Version  Thai : English 

VoIP Voice Gateway Series Products
-----------------------------------------------------------------------------------------------

The VP voice gateway series comprises VP6000, 
VP 2000, VP 800 and VP600. The series supports 
H.323 standard protocol and SIP protocol 
compatible with H.323 and SIP standards.

The VP voice gateway series adopt modular 
design; have several different models, 
so that end-user can design optimized solution 
for different networks requirement.

The VP voice gateway series integrate several 
value-added features, especially the features 
of Telephone Priority Allocation, Hot-Line Dial, 
Move with Original Number, Intelligent Routing, 
Conference Call.

The product series extends busy-tone scan 
technology compatible with most companies
PBX for least customer investment. When IP 
network is faulty, it automatically switches to 
backup network or PSTN network to ensure 
non-stop service.

VP6000
The VP6000 is a core-level IP voice gateway, 
which provides four E1 relay and 96 FXS or 48 
FXS+48 FXO It supports conference call function 
and adopts modularization design, hot-swap, 
dual-power supply redundancy, and switch 
without power supply (FXS and E1) with 
carrier-class reliability applied to IP voice 
gateway with bigger capability and high reliability.

VP2000
The VP 2000 is an integrated access IP voice 
gateway, which provides one-port E1 relay and 
48 FXO or 32 FXS. It offers modular design 
interfaces, smart configuration and convenient 
network management and provides, E1 relay, 
FXS and FXO interfaces.

VP800
The VP800 is a terminal IP voice gateway, 
which provides 16 FXS or 16 FXO).

VP600
The VP600 is a terminal IP voice gateway, 
which offers variety of modes. It applies to 
network terminal access -- specifically 
desktop access.

Key Features

PSTN Reliability
- VG M6000 Supports CARD hot-swap, power supply redundancy backup and 
  E1 port backup 
- Maipu IP series product (except VG2000) supports the switch without power supply 
  of FXS and FXO ports to guarantee reliable network operation

PSTN Call Quality
- Auto-modulation coding rate 
- Voice priority strategy 
- Silence compression 
- Comfortable noise and echo cancellation 
- Dynamic Jitter Buffer adjustment 
- Lost packet compensating technology 
- Calling quality same as traditional PSTN 

Abundant value-added function 
- Call-id   
- Call transfer     
- Call forward (no response forward, non-condition forward)
- Call waiting    
- Hot dial 
- Busy tone auto identification 
- Port backup 
- Network backup 
- Second dial-up 
- IVR recording 
- Group ring 
- Call answering 
- Direct dial, no extension number 
- Powerful IP fax function, supporting standard T.38 protocol 
- List feature

Compatibility
- Compatible with standard H.323, SIP protocol IP voice gateway, PBX and standard 
  IP voice products of other companies 

Accounting & network management   
- VP Voice Gateway series combine with integrated service authentication 
  accounting system to provide time limitation, called/calling limitation, called 
  query and bill query 
- VP2000 is IP voice NMS, which provides the integrated management 
  to IP voice network to finish management of remote configuration (backup, 
  configuration, upgrade), topology (auto network discovery), event (event, warning)




Technical Specifications

Console port 

Service slot

128M

Flash 

FXO, FXS, E1

FXS to FXO
FXS to IP
FXO to IP
FXS to E1
FXO to E1
E1 to IP

Ethernet 
interface

IEEE 802.2 (LLC), IEEE 802.3 (Ethernet)

ITU-T G.703 (1999)

Signal relay 
protocol

CAS: Analog CO Trunk, China 
NO.1
CCS: ISDN PRI (AT&T 
Custom, NI-1 and NI-2)

Analog CO Trunk

VoIP key 
protocol 

ITU-T H.323, H.225.0 (RAS and Q.931), H.245, H.235, 
H.450.x, T38, SIP

Voice coding

G.711, G.723, G.729

Compressed 
voice 
transmission

RTP/RTCP

Management 
protocol

SNMP

Echo restrain

G.168 2000 compliant

Voice activation
/comfortable 
noise

VAD/CNG

Signal check 
and production

Dimension 
(LxWxH)

482.6mm
312.5mm
125.6mm

Input 
voltage (AC)

90~250V

50~60Hz

Power 
consumption 
(W)

<150W

Typical Applications
VP2000 as small size PBX Access Platform


The provincial company adopts VP6000, configured 32FXO access card and E1 relay 
card to realize large capability access and local PSTN connectivity. B adopts VP800, 
configured FXO simulated access card and FXS simulated relay card to realize local 
phone access and PSTN connectivity.

A adopts VP2000 and access PBX to IP network to realize local PSTN connectivity. 
The branch offices, according to the capability requirement, adopt VP800 or 
VP600 to realize phone access. The provincial company configures two IP voice 
gatekeeper and operate VBRP protocol to realize gatekeeper hot backup, and 
guarantee the network reliability.