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4VoIP PCB Overview
The 4 port VoIP PCB (P/N 92046) provide a means of connecting multiple i-Series systems together over an IP WAN. With the addition of
the VoIP PCB and using 124i Enhanced software version 2.01.00 or higher, it is now possible to place calls between i-Series systems using
VoIP and the Digital Networking features. Transmission of both voice and data over the same connection is now possible. This eliminates the
need for point-to-point connection between sites and allows the use of a shared public network such as Frame Relay or ATM.
Currently, the VoIP feature can provide:
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Desk-to-desk calls between i-Series systems
- Trunk-to-trunk connections between sites
- Only DID call handling is supported
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Ability to transfer intercom or trunk calls to an extension on another i-Series system
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Ability to transfer intercom calls from a remote site to a local trunk on the system
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Direct access or dial access to trunks at another i-Series site
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i-Series Networking features (such as common voice mail with voice message indication)
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Release Link Tie Trunk Transfer
Trunk release after transferring a call to another i-Series site
An extension user at one site can easily dial an extension at a remote i-Series telephone system. Calls are transported between systems using
the H.323 protocol with ISDN-like messages that contain information about the source of the call, the type of call and the destination of the
call. This call information is sent within a User-User Information element which is part of an H.223/H.225 packet.
VoIP call routing and control may be done with an external H.323 Gatekeeper. Each client is required to register with an H.323 Gatekeeper
and provide an IP address and telephone number to be used as an alias. From this information, the Gatekeeper constructs routing tables and
provides clients with directory services. When a Gatekeeper is installed, all routing and call initialization must be handled by the Gatekeeper.
The 124i Enhanced system will not be allowed to specify the destination IP address for a call if a Gatekeeper is installed.
When a Gatekeeper is not available, the 124i Enhanced must examine the dialed numbers and determine a routing method which may
include an IP address and an outgoing trunk group. The 124i Enhanced must be configured to use either F-Route or ARS to translate a dialed
number into an IP address and select a route for a VoIP call.
A maximum of 5 VoIP PCBs may be installed in a system, but with the
following limitations.
The first cabinet can only have one VoIP PCB
installed and must be in slots 4-8. The second and third cabinets can
each have only two VoIP PCBs installed and must also be installed in
the last four slots in the cabinet (slots 12-16 in the second cabinet,
slots 20-24 in the third cabinet).
All trunks ports on the same VoIP PCB must be assigned to the same
trunk group since incoming VoIP calls will select any idle port on the
PCB.
The VoIP PCB provides the following:
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Run/Block switch for enabling/disabling the PCB
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Load switch used for updating the PCB firmware
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PCMCIA card slot for updating PCB firmware
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DIN connector for diagnostics (no DIMU is required,
simply plug a terminal into the connector)
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8-pin LAN connector (CN10)
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Status LEDs for each VoIP port
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Run LED indicates if PCB is functioning
VoIP PCB
CN10 Connector
DIN Connector
Load Switch
Run LED
Status LEDs
Run/Block Switch
Reset Switch
