Allied Telesis OmniConnect/ISDN, Руководство пользователя

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OmniConnect / ISDN
User’s Manual Page 4
Part number 613-10787-00
Both interfaces support two independent Bearer (B) channels that can be connected to two
destinations or bundled for one connection to support Bandwidth-On-Demand. In addition to
standard data bearer services, the OmniConnect access devices support Data over Voice
(DOV) service. In some areas, DOV allows the use of inexpensive voice bearer services while
transmitting data, thus saving on long distance and other toll costs.
2.1.5. Advanced voice support
The OmniConnect series of remote access / Internet access devices feature built-in support for
voice call management. OmniConnect equips a small office with the communications
capabilities of a sophisticated corporate office. With OmniConnect/ISDN’s advanced voice
support, small office professionals will present the same professional image as their corporate
office counterparts. By leveraging the full power and speed of ISDN digital telephone service,
the OmniConnect access device provides comprehensive, cost-effective communications for a
small office - including complete voice and data call management. The flexible
OmniConnect/ISDN combines the capabilities of a personal phone system, personal assistant
and ISDN access device into a single, integrated and easy to use product.
OmniConnect/ISDN provides professional call management, call forwarding, distinctive
ringing and caller ID. OmniConnect forwards important callers to a user specified phone
number. When an important customer calls, OmniConnect dials other locations (such as a
cellular phone and an alternative work phone), and connects the caller even when the
OmniConnect user is away from the office. OmniConnect also provides real-time caller ID
support, notifying users of the incoming calls phone number so important calls will not be
missed. In addition, call ringing is distinctive based upon user’s needs.
2.1.6. Dial-on-demand routing
OmniConnect/ISDN includes dial-on-demand routing. Dial-On-Demand ensures that the
OmniConnect will automatically initiates a connection when data traffic is sent from the LAN
to the Internet. This allows LAN users connected to the OmniConnect to dynamically initiate
calls to remote devices across ISDN BRI lines as the need emerges. OmniConnect also
terminates ISDN connections when it senses that there is no demand on the ISDN line from
local users.
2.1.7. Bandwidth allocation control and bandwidth allocation protocols
Bandwidth Allocation Control Protocol (BACP) and the Bandwidth Allocation Protocol
(BAP) define a set of rules that gracefully control dynamic bandwidth allocation by managing
the number of links in a point-to-point protocol (PPP) multi-link bundle. BACP consists of a
network control protocol that negotiates once per PPP multi-link bundle while BAP defines a
set of request and response messages to manage the links.
OmniConnect/ISDN software supports dynamic management of both B channels.
Implementation of BACP and BAP allows OmniConnect access devices to coordinate and
negotiate the actual allocation and de-allocation of the second channel. The parameters are set
using the configuration screen. BACP is only implemented on a BRI interface.
Note:
Multi-link PPP has to be negotiated for BACP to be functional.
If a data call is bumped to accommodate a voice call, and BAP negotiation is enforced, the
user might experience a very short audio idle period before a B channel becomes available. In
some cases, the user might not be able to connect the voice call if the peer (the user at the
other end of the data call) declines to terminate the link with the OmniConnect.