3Com SuperStack 3 NBX Administrator's Manual page 269

6 Make the desired changes. Table 46 lists all span parameters for
reference. The number of channels supported per span depends on the
configuration of the Digital Line Card. E1 cards support 30 channels per
span.
Table 46 Span Parameters
Parameter
Span Name
Interface Type
CO Switch Protocol
Framing Type
Line Code
Line Length
Timing Mode
Terminal Endpoint Identifier (TEI) N/A
*When this value is changed, the card reboots itself and all current calls on the card are lost.
**When this value is changed, the card is temporarily offline, and all current calls on the card
are lost.
7 Click Apply.
8 Enable the On Line check box to bring the span online.
Before the span can come online, the board must be online.
9 Click Apply for the changes to take effect.
10 Click OK.
Configuring Partial E1 Lines
Some telephone companies offer an E1 line that has less than the
maximum number of channels implemented. This is called a Fractional,
Partial, or Subequipped E1. Example: To reduce near-term costs, you may
decide to purchase 15 channels now and implement more later in order.
Configuring and Managing E1 Digital Line Cards
E1 ISDN PRI Options
A name that helps you identify this span in lists.
*
E1
ETSI **
Multiframe with CRC4
Double Frame (Multiframe without CRC4)
AMI *
HDB3 *
N/A - E1
N/A
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