Prosody compact PCI installation guide
22
ETS functionality
For 120 Ohm E1 cards with RAM, the filename for the software to be loaded into RAM for
signalling software to connect to the network:
ets_supn.upr
(ETS300 — network to user)
ets_supu.upr
(ETS300 — user to network)
•
Call initiation using ETS300-102 signaling
•
Call clearing using ETS300-102 signaling
•
Call answering using ETS300-102 signaling
• Host
independent
installation
•
Application program generated by the user
•
Independent Operation of the network ports (one or both ports attached to the network)
•
Operational code running from RAM
Speech calls
If the E1/T1 cPCI card is used in an application that makes or answers calls with a service code
that indicates a speech or telephony call, or any call that may use a partly analogue route, there
is a requirement that audio signals transmitted are encoded using CCITT A-law PCM, and do not
exceed a 1 minute mean power level of -9dBm.
Many of the speech and FAX resource cards that may be used with the E1/T1 cPCI card comply
with this requirement. It is the responsibility of the user to ensure that this requirement is
complied with, by confirmation via the manufacturer of the card, or by any other suitable means
such as independent testing.
Signal sources that do not guarantee compliance with this requirement must be conditioned by
appropriate circuitry before transmission.
Card installation & connection
Safety Warnings
Interconnection circuits should be such that the equipment continues to comply with the
requirements of 2.3 of EN 60950 for SELV circuits, after making connections between circuits
using any of the internal ports.
The host PC into which the Prosody cPCI Card is fitted is classed as an indirect attachment. The
Compact PCI
©
bus connector provides an interconnection circuit between the host PC and the
Prosody cPCI Card. Similarly, equipment connected to the Prosody cPCI card H.110 CTBus,
MVIP or SC Bus ports are also classed as indirect attachments.
Installation and Safety
The card must be installed such that, with the exception of the Compact PCI
©
, H.110 bus, MVIP
and SC Bus connections, clearance and creepage distances shown in the table below are
maintained between the Prosody cPCI card and any parts of the host PC or other expansion
cards which use or generate a voltage, shown in the following table below.
Clearance mm
Creepage mm
Voltage present on other
parts of the host or on
expansion cards.
2.0
2.4 (3.8)
Up to 50V rms or dc
2.6
3.0 (4.8)
Up to 125V rms or dc
4.0
5.0 (8.0)
Up to 250V rms or dc
4.0
6.4 (10.0)
Up to 300V rms or dc