E1/T1 PCI card installation guide
9
2.4 Installing/upgrading
modules
Available modules:
•
Primary rate line interface modules (PM) 1, 2 or 4 port E1 or T1 modules are available, these
modules plug into connectors J5 - J6.
•
Signalling DSP modules for tone signaling (CAS) and basic signal processing functions can
be fitted to positions J7 - J8 & J9 - J10.
If a card has been purchased which has limited ports or no optional modules fitted, the
capability of the card may be increased by upgrading the PM or fitting additional Aculab
modules to the expansion ports. Normally this would be accomplished by returning the card to
Aculab for upgrade. The process is relatively straightforward and can be carried out by
competent personnel by using the following instructions.
J5
J6
J7
J8
J9
J10
Expansion ports on the E1/T1 PCI card
2.4.1
Removing an existing card:
1. Remove the power from the host computer and disconnect the mains leads.
2. Remove the covers from the host computer.
3. Ensuring that the appropriate ESD (Electrostatic Discharge) measures are taken, remove any
bus cables from the card then remove the PCI card from the PCI slot.
2.4.2
Removing an existing module:
1. Remove the existing module retaining screws and washers.
2. Gently remove the module from the board taking care not to use any undue force that may
damage components.
2.4.3 Installing
modules:
Only expansion modules designed for this PCI card are suitable for use. Any attempt to use
different modules may cause damage, will invalidate warranty and may invalidate approvals.
PM modules produced prior to revision 2, support either E1 or T1 only. Revision 2 PM modules
(PM2 or PM4 only) can simultaneously support both E1 and T1, depending on the driver
firmware downloaded to each port.
Note
All T1 connections are 100ohm by default; E1 connections are 120ohms by default. Subject to the signalling protocol being used, an E1
port can also support 75ohm network connections.
If you are installing a pre revision 2 E1 PM module and require 75ohm termination, refer to the
75ohm network connection section before fitting the module.
Each port, whether E1 or T1, is associated with a specific firmware which must be downloaded
to the PM module. Refer to the
Call, Switch and Speech Driver Installation Guide
for further
details.