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RMX 2000 Administrator's Guide - Polycom Support

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ISDN/PSTN<br />

<strong>Polycom</strong> <strong>RMX</strong> <strong>2000</strong> Administrator’s <strong>Guide</strong><br />

Table 16-13 lists the ISDN supported bit rates and their respective<br />

participant connection capacities per RTM ISDN card:<br />

Table 16-13 ISDN – E1/T1 Connection Capacity vs. Bit rate<br />

Bit Rates<br />

(Kbps)<br />

(Bonded)<br />

E1 T1<br />

Number of Participants<br />

per RTM ISDN Card<br />

128 40 40 If the conference bit rate is 128Kbps,<br />

participants connecting at bit rates<br />

192 40 40 lower than 128Kbps are<br />

256 40 40<br />

disconnected.<br />

320 40 40<br />

384 34 34<br />

512 25 25<br />

768 17 17<br />

1152 11 11<br />

1472 9 9<br />

1536 8 8<br />

1920 7 6<br />

If the conference bit rate is above<br />

128Kbps but does not match any of<br />

the bonded bit rates, participants are<br />

connected at the highest bonded bit<br />

rate that is less than the conference<br />

bit rate.<br />

For example: If the conference bit<br />

rate is 1024Kbps, the participant is<br />

connected at 768Kbps.<br />

16-71

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