Motorola 49901 Instruction Manual - Page 56

ISDN BRI Voice Daughtercard Connectors, ISDN BRI Voice

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Vanguard Daughtercards ISDN BRI Voice DSU This card provides 2B+D Channel through a BRI S/T interface. It conforms to ITU I.430, is LAPD:ITU Q.921 compliant, and supports: • Integral X.31 • ITU-T Q.931 (EURO IDSN) - ETSI switch type to connect to PBXs and public networks. • ECMA 143 - QSIG Basic Service to connect to PBXs over private line. • ECMA 165 - QSIG Generic Functions for Support of PBX Supplementary Services. • ITU-T G.711A (A-law) and G.711U (µ-law) interface voice encoding. • ITU-T G.723, G729, and VanguardMS proprietary CVSELP packet voice compression. Figure 2-15 shows the ISDN BRI Voice Daughtercard connectors as they appear on the back panel. BRI S HI Z S-BUS S-BUS 100Ω Figure 2-15. ISDN BRI Voice Daughtercard Connectors Note For more information on supported daughtercard configurations, refer to the Daughtercard Installation Manual (Part Number T0020) Chapter Five. The DSU Daughtercard provides an RJ48S connector and can support speeds of 56 kbps (synchronous). It conforms to AT&T 62310 point-to-point and multipoint, and to ANSI T1/E1.4/91-006 56 kbps. The card supports the following capabilities: • Internal/external clocking • Internal/external loop back • 4-wire line driver operation The card also supports multidrop DSUs when either of these conditions exist: • If a MARK Idle protocol is used (such as MX25). • If the Telco uses an OR'ed or Data Contention is used to mix individual DRU drops. Figure 2-16 shows the 56K DSU Daughtercard connector as it appears on the back panel. DSU Figure 2-16. DSU Daughtercard Connector 2-14 Hardware Description

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2-14
Hardware Description
Vanguard Daughtercards
ISDN BRI Voice
This card provides 2B+D Channel through a BRI S/T interface. It conforms to ITU
I.430, is LAPD:ITU Q.921 compliant, and supports:
•
Integral X.31
•
ITU-T Q.931 (EURO IDSN) - ETSI switch type to connect to PBXs and
public networks.
•
ECMA 143 - QSIG Basic Service to connect to PBXs over private line.
•
ECMA 165 - QSIG Generic Functions for Support of PBX Supplementary
Services.
•
ITU-T G.711A (A-law) and G.711U (
µ
-law) interface voice encoding.
•
ITU-T G.723, G729, and VanguardMS proprietary CVSELP packet voice
compression.
Figure 2-15 shows the ISDN BRI Voice Daughtercard connectors as they appear on
the back panel.
Figure 2-15. ISDN BRI Voice Daughtercard Connectors
Note
For more information on supported daughtercard configurations, refer to the
Daughtercard Installation Manual
(Part Number T0020) Chapter Five.
DSU
The DSU Daughtercard provides an RJ48S connector and can support speeds of
56 kbps (synchronous). It conforms to AT&T 62310 point-to-point and multipoint,
and to ANSI T1/E1.4/91-006 56 kbps. The card supports the following capabilities:
•
Internal/external clocking
•
Internal/external loop back
•
4-wire line driver operation
The card also supports multidrop DSUs when either of these conditions exist:
•
If a MARK Idle protocol is used (such as MX25).
•
If the Telco uses an OR’ed or Data Contention is used to mix individual DRU
drops.
Figure 2-16 shows the 56K DSU Daughtercard connector as it appears on the back
panel.
Figure 2-16. DSU Daughtercard Connector
S-BUS
100
Ω
HI Z
S-BUS
BRI S
DSU