Siemens HiPath 1100, Service Manual

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Service Manual
3-69
Modules
Expansion modules (EB)
3.5.4 TME1 module
The TME1 module can be configured to operate with E1 CAS access or S2 access.
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E1 CAS access
The TME1 module with E1 CAS access is a Digital Interface Unit (DIU) used for connecting a
HiPath1150/1190/1190R to a PSTN via an E1 trunk. The E1 trunk can carry 30 digital voice
channels. However, the HiPath 1150 systems use up to 20 channels, while the HiPath 1190
uses up to 30 channels when the TME30 module is allocated to slot 1 and up to 15 channels
when it is allocated to slot 11.
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Functions
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Increases the system’s number of external lines
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Provides Caller ID (CLIP) and Direct Dialing to Extensions (DID) to help reduce
call loss rate while simplifying access for the user.
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S2 access
It provides connections to the ISDN network via primary access (30 Channels), allowing
services offered by the network to be used.
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Functions
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It increases the capacity of the system’s external up to 20 on the HiPath 1150 and
45 on the HiPath 1190/1190R
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The system only operates in Point to Point connections (PP).
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The ISDN line may be used for video conferencing (external connection, outside
the exchange)
Warning
The TME1 module is factory configured to operate as a CAS interface.
In order for the module to work as a S2 interface you must run a reconfiguration pro-
cedure using the S2M Maintenance.
HiPath 1190/1190R: In the event of a problem occurring with the TME1 link with E1
CAS master (see “TME1 module display readings (CAS access)” on page 3-75) dur-
ing an external call, the system will go into a mute state for approximately 3 seconds
while the system clock is synchronized.
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