09.12.2012 Views

Server Alarms - Avaya Support

Server Alarms - Avaya Support

Server Alarms - Avaya Support

SHOW MORE
SHOW LESS

Create successful ePaper yourself

Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.

BRI-SET, Various Adjuncts<br />

context, the term ``ISDN-BRI port'' is used to refer collectively to ports on the TN2208 MFB<br />

circuit pack that is connected to ASAI or <strong>Avaya</strong> adjuncts. The TN2208 ESAI MFB is handled by<br />

switch software as it is an ISDN BRI compatible board and every maintenance action referring<br />

to ASAI and <strong>Avaya</strong> Adjunct Links in this section applies.<br />

Two types of ISDN-BRI endpoints may be connected to ISDN-BRI (ISDN Basic Rate Interface<br />

Line) TN556 and TN2198 circuit packs: ISDN-BRI station endpoints, ASAI (Adjunct-Switch<br />

Application Interface) and <strong>Avaya</strong> adjuncts (for example CONVERSANT® Voice System). These<br />

circuit packs contain 12 ports of line circuit interfaces, each of which operates at 192 kilobits per<br />

second (kbps) with two B-Channels and one D-Channel. For BRI endpoints, each B-Channel<br />

may support voice or circuit-switched data and may be circuit-switched simultaneously. The<br />

B-Channels are not used by ASAI or <strong>Avaya</strong> adjuncts. The D-Channel is used for conveying<br />

signaling between the switch and a BRI endpoint(s) or ASAI or <strong>Avaya</strong> adjuncts. Each ISDN-BRI<br />

D-Channel is connected to the switch processor and the ISDN-BRI port through the PKT-BUS<br />

(packet bus).<br />

ISDN-BRI endpoints come in a number of configurations. Every endpoint requires the<br />

D-Channel to convey signaling information to the switch. A voice-only set requires only one<br />

B-Channel. A voice and data-capable set requires both B-Channels (one for voice and one for<br />

data). Therefore, each TN556 port can support either two voice-only sets or one voice and<br />

data-capable set. Only a single ASAI or <strong>Avaya</strong> adjunct may be connected to an ISDN-BRI port.<br />

Multiple adjuncts per line are not supported.<br />

Figure 40: ISDN-BRI Set Interactions illustrates the physical connection (solid line) between an<br />

ISDN-BRI circuit pack and a voice or voice/data set. Each physical connection allows for two<br />

B-Channels, as stated above, plus one D-Channel. Each ISDN-BRI circuit pack can support up<br />

to 12 of these PHYSICAL connections to different voice and voice/data sets or ASAI and <strong>Avaya</strong><br />

adjuncts.<br />

Figure 40: ISDN-BRI Set Interactions<br />

PBX<br />

BRI Line<br />

Circuit Pack<br />

Logical Connection<br />

Physical Connection<br />

P<br />

O<br />

R<br />

T<br />

D-Channel<br />

B-Channel<br />

B-Channel<br />

PHYSICAL CONNECTION<br />

VOICE<br />

or DATA<br />

SET<br />

VOICE<br />

or DATA<br />

SET<br />

Communication Manager Release 5.0 Issue 4 January 2008 599

Hooray! Your file is uploaded and ready to be published.

Saved successfully!

Ooh no, something went wrong!