Equitel E451 Manual de usuario descargar pdf (Pagina 31)

October 2013 – Ed.1.0

EQUITEL E400 Family – Control and communications protocol

Page 28

Once the modules E401 and E451 have been properly configured in the switchboard,

(9)

they have to

The advantage of working in this mode against P2P-SIP that we will explain now is given by the PBX itself,

since it allows a much better communications management with supervision tasks, calls transfers, etc.

P2P-SIP mode

If any of the E400 intercom modules is configured in this working mode, a PBX is not needed.

Once the destination extension is configured in the modules E401 and E451, it is possible to make/receive

calls directly to/from IP telephones not requiring registering in a PBX. It is also possible to make calls

directly between the intercoms E400.

4.2.1. Basic elements of the SIP network

As we can see in the Figure 13, the basic elements of a SIP based intercom network are as follows:

• One or several intercoms E451 (E401 boards).

• A PBX (in P2P-SIP mode it is not necessary).

• An IP telephone (it can be substituted by another computer with a SOFT_PHONE software).

For this example we use a software based PBX central, “3CX phone system”. A free demo can be

downloaded from the web site http://www.3cx.es/. Nevertheless there are many other similar solutions

in the market.

Optionally, we can add a controller to the network, consisting on a computer with the necessary software.

It is possible to use the demo application supplied by EQUITEL. When configured in the SIP working mode

it supervises the established calls to register them and controls the auxiliary inputs and outputs.

4.2.2. SIP network basic configuration

The procedure to configure a network using E451s or E401s and the SIP protocol is as follows

(10)

SIP mode with PBX

1. Set the PBX so as to register as many extensions as E451 intercoms we wish to use and another

extension for the telephone.

2. Set the IP telephone to register with the PBX with the assigned extension. It is very important the

telephone to have the capacity of using the audio codec G711-A, the one employed by E451

units.

3. Set the E451 intercoms to register with the PBX with their assigned extension.

4. Configure in each one of the E451 units the device extension you wish to call in a “push-to-call”

application. We can transfer the call to another telephone by setting the PBX, should the

configured extension in E451 not answer.

5. Once all the units are configured, we have to check in the PBX that all of them are actually

registered and capable of communicating.

(9) Consult each model particular documentation for a more detailed description of the SIP agent setting process.

(10) The PBX and telephone particular setting processes are beyond the scope of this document. Please refer to E401 and E451 particular documentation to know more

about their configuration.

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Equitel E451 Manual de usuario Pagina 31

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