3Com SuperStack 3 NBX Administrator's Manual page 306

306 C 3: D
HAPTER EVICE
C
ONFIGURATION
Figure 127 Modify Span Dialog Box — ISDN PRI
6 Make the desired changes. Table 43 lists all span parameters for
reference. The number of channels supported per span depends on the
configuration of the Digital Line Card. If you configure the T1 Digital Line
Card for DS1, it supports 24 channels. If you configure the card for ISDN
PRI, it supports 23 channels. See "Support of AT&T's 4ESS Switch
Protocol" later in this section for details on configuring the NBX system
for this protocol.
Table 49 Span Parameters
Parameter T1 DS1 Options ISDN PRI (T1) Options
Span Name Enter as required. Enter as required.
Interface Type N/A
CO Switch N/A
Protocol
Framing Type D4
ESF – Extended
Super Frame
Line Code AMI
B8ZS
T1 *
ETSI **
AT&T Custom 4ESS
AT&T Custom 5ESS
DMS Custom
National ISDN-NI1/NI2
QSIG slave
** ESF – Extended Super Frame
F4 – 4 Frame Multiframe
F12 – 12 Frame Multiframe (D4/SF)
**
F72 – 72 Frame Multiframe (SLC96)
** HDB3 *
*
B8ZS
**
**
**
**
**
**
*
*
*
*