Zhou500 E1 VoIP Gateway

                         

Introduction

 

Zhou500 E1 gateway is an integrated media and signaling gateway that especially for the enterprise and operators. The trunk gateway is located in the edge of PSTN and IP and is enabling the delivery of SIP / H.323 into legacy ISDN PRI networks, as well as IP to IP transcoding for IP network peering applications.

 

With its compact 1U high-density package, Zhou500 E1 gateway supports 1/2/4 E1/T1 Digital Trunk at PSTN side with ISDN PRI signaling, covering the functions of call processing, control and maintenance.

 

Zhou500 E1 gateway is adopted the multi-management according to the different authorization to ensured the data safety. Zhou500 E1 gateway support the signaling and media stream encryption, provides end to end VOIP anti block. 

 

In NAT situation, Zhou500 E1 gateway support the RTP stream of IAD directory through the channel between the IAD and RTP, Consequently the load is reduced in the SoftSwitch.   

 

Zhou E1 gateway has complete billing software. By using this software, users can make Zhou500 E1 gateway's charging management and statistic analysis flexible, which can make the external balance exact, and the inner management of the fee flexible.

 

Features

 

Powerful Processing Capacities

 

Zhou500 E1 gateway has the excellent capacities to loading the signaling and media data. Comparing the Zhou500 E1 gateway with the PCI E1/ T1 boards (compatible with Asterisk), it is obviously Zhou500 E1 gateway has the excellent voice disposal capacities. When the Zhou500 E1 gateway is in the completely loading state, the DSP chip still can able to disposal the voice data e.g. G.711, G.726, G.729a/b, G.723, G.728, iLBC (optional), 128ms with echo cancellation, fax over IP, etc.

Excellent Quality of Voice Communication

On the basis of powerful processing capability, Zhou500 E1 gateway has an excellent quality of voice communication. Supporting several coding/decoding such as G.711?G.726?G.729a/b?G.723?G.728?iLBC etc and dynamic switching function, which can make better use of the bandwidth and ensure well quality of communication on situation of low bandwidth and high error rate.

 

ü               Voice Activity Detection (VAD) can save resources of bandwidth effectively.

ü               Comforting Noise Generation technique (CNG) provides the same experience as communication by PSTN.

ü               Self-adaptive dynamic buffering technique can satisfy the application request in bad network situation.

ü               Maximal 128ms echo cancellation technique is much higher than the similar target request, which can eliminate echo jamming brought by long distance communication.

ü               DTMF detection/generation technique can effectively support the services such as fax, callback, second dial and so on.

Various Service Functions

MG3000-T4 supports many kinds of functions to satisfy different needs of application and solution schemes, and it is the best choice of network telephone trunk, PC-PSTN and corporate PBX net. It has these functions below:

ü       Caller/callee number switching;

ü       Routing select;

ü       RADIUS charging and CDR output;

ü               Playing secondary dialing tone;

ü               Support signaling and media stream encryption

ü               Support RTP stream forwarding in the NAT condition;

ü               T.30 and T.38 fax.

 

Entirely encryption (VOIP Anti block)

 

In the market, basically the encryption function is performed between the SoftSwitch and IAD. But when the voip block is performed between the SoftSwitch and the trunk gateway, then the user couldn't able to service. Therefore the only solutions for user that change the IP address frequently or build up the virtual channel to prevent the communication. But now Zhou500 E1 gateway have the excellent capacity that it directly support the encryption function with Signaling and media stream in order to prevent the force-out between the SoftSwitch and IAD.

 

Reducing the SoftSwitch load

 

In the market, the SoftSwitch owner is delight with the developing users, and also is worried the SoftSwitch whom have the heavy load. The only solution is gained the hardware equipment to solve the RTP stream transmits in the NAT. But now Zhou500 E1 gateway has the excellent capacity to fix up the issue. In order to do so, the Zhou500 E1 gateway support the RTP stream transmits directly through the trunk gateway without the SoftSwitch to reduce the SoftSwitch load. 

 

Plug and Play Adaptive Capability

Zhou500 E1 gateway suits kinds of network environments, and can be smoothly transferred from present network; it is permitted to be using in private network, and it can ensure the safety of the network. By using Zhou500 E1 gateway, you can set transparent VoIP network between multi-points with only minimal changes of existing voice and data network equipments.

 

Simple and Convenient Management and Maintenance

 

At the aspect of software, Zhou500 E1 gateway supports configuration and network management based on both WEB and TELNET, which is easy to be managed and maintained even for the amateur.

 

At the aspect of hardware, Zhou500 E1 gateway has a compact frame. It is only 1U in height, and can be fixed both in the normal 19-inch frame and in small machine room; it supports the power of not only -48V DC in the Telecommunication machine room but also the 220V AC. As a conclusion, it supports kinds of machine room conditions.

 

Powerful  Billing Management Function

The equipment purchase expense is only for a while, and the benefit for long is the telephone expense in use. Zhou E1 gateway has taken it into special consideration. Its special necessary billing management system can do charging and statistic work aiming at equipment's call traffic. The systems is exact and reliable when users do outside telephone expense balance, while you can know each person's expense inside and control his/her expense by using prepaying management at the same time.

 

It also supports RADIUS and CDR output; if you have got telephone expense management system already, you could easily manage Zhou500 E1 gateway too.

 

Technical Specifications