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<h1>Q1 Interface Between the BSC and Transmission Equipment</h1>

<p>With the Q1 Interface Handling MML, the user creates the
service channels used in communication between the BSC and the transmission
equipment. The Q1 service channels are asynchronous serial communications
channels. The protocol used is Nokia's own Transmission Management System
Protocols.</p>


<p>The default maximum number of Q1 service channels in the
BSC is 18.</p>


<p>The user also defines the supervised equipment. Altogether
512 pieces of equipment can be defined into Q1 service channels under the
BSC. All the equipment in the same channel has a unique address (polling address).</p>


<p>To open the service channels, the transmission equipment
has to be configured locally with a hand-held service terminal or with the
Node Manager Program.</p>
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