User Manual - Configuration Guide (Volume 3)

Chapter 1

Versatile Routing Platform

VoIP Configuration

1.4.2Configuring Router FXO and E&M Trunk Ports for Interconnection

I.Networking requirements

There is a local telephone network established by PBX in Beijing, Shenzhen and Shanghai respectively, it is required that the three networks implement interconnection via three routers with voice function and the internal PBX subscribers can make non- local ordinary calls via VoIP.

The routers in Beijing and shanghai can provide the FXO ports, while the router in Shenzhen uses the E&M port.

You may select any of the following modes for the connection of any router and the PBX:

z The routers provide the FXS ports, the PBXs provide two wire loop trunk port FXOs

z The routers provide the FXO ports, the PBXs provide ordinary line port FXSs z All the routers and the PBXs provide the E&M trunk ports

The number of connection established between the PBX subscribers in Shenzhen and Beijing are determined by the smaller one of the number of Router_Shenzhen E&M trunk ports and Router_Beijing FXO trunk ports, so it is with Shanghai.

In the following figure, Tel.1 in Beijing is an ordinary PSTN subscriber. If not using VoIP, when the subscribers in Shenzhen or Shanghai dial Tel.1, they need to add the area code 010, but through the VoIP configuration, instead of dialling the area code, you can call in local mode, which is very convenient and can also save call charge.

Provided that when the internal PBX subscribers in the three cities make external calls, they need to dial “0” firstly.

II. Networking diagram

021-1001

021-1002

Shanghai

 

 

FXO

WAN

 

Port0

 

Port1

3.3.3.3

PBX

Router_ Shanghai

Router_Shenzhen

 

010-1002

010-1001

FXO

Port0

PBX Port1 Router_Beijing

WAN

WAN

 

 

2.2.2.2

 

 

 

 

 

 

E&M

 

 

 

Port6

0755-2001

0755-2002

 

 

 

WAN

 

 

 

1.1.1.1

 

 

Shenzhen

 

 

 

Beijing

Tel.1

PSTN 010-6543

PBX

Figure VC-1-6The routers connect with the PBXs via the E&M trunk

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Huawei v200r001 user manual Shanghai