Capsat TT-3080A User Manual page 20

The Capsat Messenger The Capsat Messenger
The ISDN interface ISDN interface can be used for connection of ISDN
equipment – data as well as voice/picture based equipment
(phones, audio codecs or video conferencing equipment). The
following services may be used:
•
64 kbit/s UDI
•
56 kbit/s UDI
•
Speech
•
3.1 kHz audio
•
mini-M voice
Equal to the terrestrial ISDN network the terminal offers the
possibility to have more than one device connected to this
interface. Each device can be individually addressed when called
and the service type can be selected individually. This requires
that the attached equipment supports MSN (Multiple Subscriber
Number). Depending on brand of euipment it may be possible to
program the equipment with more MSNs. If a device should
respond to a certain IMN number it must be programmed in the
ISDN equipment as MSN. Notice that the equipment will only react
if both MSN as well as service type (speech, 3.1 kHz audio, 64
kbit/s or 56 kbit/s) fits with the ISDN equipment.
Please observe that the ISDN interface "only" supports data
transmission of 64 kbit/s (one B-channel) as opposed to 2 times 64
kbit/s (two B-channels) available on the terrestrial ISDN network
and that the delay is also greater. Not all standard ISDN devices
are all equally good at coping with these differences.
The RS-232 interface RS-232 interface can be used for one of the service types
•
mini-M data service
•
IPDS service
and for two local functions
•
printer function
•
configuration function
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Hardware interfaces Hardware interfaces
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