TANDBERG MPS User Manual page 113

TANDBERG MPS User Manual
Ref. 2: Ascend Multiband Plus-T1/PRI, User Documentation, Page 6-8
ISDN Aggregation Standards
H.221 Frame Structure from 64 (56*) kbps to 128 kbps
ISO 13871 BONDING, Mode 1 from 64 (56*) kbps to 2 Mbps
H.1
• For bit rates from 56 kbps up to 128 kbps (1 or 2 channels).
• The maximum relative delay difference between the 2 B-channels is 0.6 second.
BONDING
• ISO 13871, BONDING Mode 1 for bit rates from 56 kbps up to 2 Mbps (1 to 30 channels).
• The maximum relative delay difference between B-channels is 0.5 second (i.e. to compensate for different
routing of channels).
The following are the standard bandwidths on H.320:
30ch – 24 – 23 – 18 – 12 – 8 – 6 – 5 – 4 – 3 – 2 – 1
ISDN channel set-up
The following is a description of how the ISDN channels are set up.
Incoming & Outgoing MCU calls: Normally the MCU will set up only 1 channel from PRI 1
and build up the channels starting from the 'bottom' of the last PRI in use.
This will ensure that the MCU always have available channels on the first PRI number (which
normally should be the MCUs main number).
The TANDBERG MPS supports simultaneous dial in to the same conference on ISDN.
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D13373.04