Toshiba Strata CT, Инструкция по установке и обслуживанию, Страница: 19 / 385

Strata CT Configuration
Strata CT I&M Manual October 2000
1-5
ISDN BRI Circuit Capacity Guidelines
This section shows the capacity guidelines for ISDN BRI circuits using the RBSU/RBSS
PCBs.
1. Each BRI circuit can be configured to support either one BRI (TE or TA) ISDN station;
or two ISDN line channels.
2. A maximum of two BRI circuits per RBSU/RBSS PCB may be used as BRI line circuits
to connect to the ISDN Exchange line. Each circuit provides two Exchange line
channels to the Strata CT.
3. Each BRI circuit provides two B channels plus one D channel and reduces the system
capacity by two station ports and two Exchange lines, regardless of how it is configured
(line or station). Each (N/T) BRI station circuit allows up to two TE-1 and TA devices to
share the BRI B channels (two simultaneous calls maximum per BRI circuit).
4. RBSS can only be used for BRI stations. All other BRI PCBs can be configured as line
or station BRI circuits.
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