Next: Functions available for phones Up: VoIP Previous: Signalling Contents
In (Figure 4.26) it is possible to see the registered IPBrick VoIP clients (IP telephones, workstations + softphone). In section Machine Management you find the description of the menu to insert the machines.
It is also possible to register phones in:
Advanced Settings - Support services - Registered phones
This option is valid, if it isn't necessary to attribute a specific IP address to the phone. It is possible to add a phone just by filling the field relating the name and the access password. This assuming that DNS is working correctly.
It is possible to configure the following field in Options (Figure 4.27):
General options:
Router with full DNAT?: If IPBrick is connected to a router responsible for the access to the exterior (in terms of VoIP) that allows the 'passage' of all traffic, it is necessary to select Yes and indicate the external address of that same router in Router public IP address;
IP address of the IPBrick public interface used by the VoIP service: IP address of the public interface of IPBrick responsible for the VoIP service;
Intranet VoIP Server only?: : It allows to route the network traffic only in a interface and not in two interfaces, as usual;
Attendance Timeout: Time (seconds) during which the call is sent to the destiny phone, before being sent or routed to another phone;
Call Timeout: Time (seconds) during which the connection is trying to be established. If it expires, the attempt will be ended;
Digit Timeout: Time (seconds) from the dialling of the last number from which IPBrick considers the dialling as ended;
Reponse Timeout: Time (seconds) counted from the moment the receiver is hung up and at its end IPBrick shall cancel the canal;
Remove default national prefix (0): It removes national prefix normally used.
Get call source address from IPBrick LDAP: If activated, it goes to the database LDAP of IPBrick defined in IPBrick IP address and in IPBrick DNS domain and, if it finds the calling number in the database, it will replace it by the name of the entity associated to that number.
Immediate answer on calls originated in a PBX: It is advisable to have this option connected if you are using connections to SIP servers (ex: VoIPBuster, NetCall), in order to avoid timeouts in the PBX central. If, for example, you intend to define rates for the calls from the PBX, this option shall have to be deactivated to avoid that the user starts paying as soon as he dials the number.
Immediate digit capture (ISDN BRI): The immediate capture of digits changes the way how the numbers sent from a PBX central are read in IPBrick. When this option is deactivated, the routine capture of digits is changed to solve problems in the reading of numbers in some central stations, for example, when the dialled number is wrongly identified in IPBrick (repeated digits ou lack of digits). Attention: This option should be placed No in 4.2 IPBrick version with BRI cards.
Options for R2 signalling:
If you are using an ISDN PRI plate in which the R2 protocol has been activated, it is possible to verify and change its definitions in the table.
Active codecs list:
In this table are listed the codecs used in IPBrick and the preference order by which they are chosen in communications. To add or remove codecs to the list, you just have to follow the connection Change, select the codec and press the button add (») or remove («). In the same way, to change the order by which the codecs are used, you should select the codec and clicking on the arrows on the right of the list, making it going up or down in the list according the necessary priority.
It is possible to select among the following codecs, knowing that the band width used for each one of them is:
The bigger the required band width, the smaller the number of possible simultaneous calls.