Demand test descriptions and error codes - Avaya Support
19.12.2012 • Views
Share Embed Flag

Demand test descriptions and error codes - Avaya Support

Demand test descriptions and error codes - Avaya Support

Demand test descriptions and error codes - Avaya Support

SHOW MORE
SHOW LESS
ePAPER READ
DOWNLOAD ePAPER
support.avaya.com

You also want an ePaper? Increase the reach of your titles

YUMPU automatically turns print PDFs into web optimized ePapers that Google loves.

START NOW

BRI-SET, Various Adjuncts<br />

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

is connected to ASAI or <strong>Avaya</strong> adjuncts. The TN2208 ESAI MFB is h<strong>and</strong>led by switch software<br />

as it is an ISDN BRI compatible board <strong>and</strong> every maintenance action referring to ASAI <strong>and</strong><br />

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

Application Interface) <strong>and</strong> <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-Chels <strong>and</strong> one D-Chel. For BRI endpoints, each B-Chel may support<br />

voice or circuit-switched data <strong>and</strong> may be circuit-switched simultaneously. The B-Chels are not<br />

used by ASAI or <strong>Avaya</strong> adjuncts. The D-Chel is used for conveying signaling between the<br />

switch <strong>and</strong> a BRI endpoint(s) or ASAI or <strong>Avaya</strong> adjuncts. Each ISDN-BRI D-Chel is connected<br />

to the switch processor <strong>and</strong> the ISDN-BRI port through the PKT-BUS (packet bus).<br />

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

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

<strong>and</strong> data-capable set requires both B-Chels (one for voice <strong>and</strong> one for data). Therefore, each<br />

TN556 port can support either two voice-only sets or one voice <strong>and</strong> data-capable set. Only a<br />

single ASAI or <strong>Avaya</strong> adjunct may be connected to an ISDN-BRI port. Multiple adjuncts per line<br />

are not supported.<br />

Figure 5: ISDN-BRI Set Interactions illustrates the physical connection (solid line) between an<br />

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

B-Chels, as stated above, plus one D-Chel. Each ISDN-BRI circuit pack can support up to 12 of<br />

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

adjuncts.<br />

Figure 5: 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 />

Issue 5 May 2009 223

logo

products

Resources

Company

Terms of service
Privacy policy
Cookie policy
Cookie settings
Imprint
Change language
Made with love in Switzerland
© 2024 Yumpu.com all rights reserved

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

Saved successfully!

Ooh no, something went wrong!