3Com SuperStack 3 NBX, Administrator'S Manual

Page: 306 / 496

306 C
HAPTER
3: D
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 T1 *
CO Switch
Protocol N/A ETSI **
AT&T Custom 4ESS
**
AT&T Custom 5ESS
**
DMS Custom
**
National ISDN-NI1/NI2
**
QSIG slave
**
Framing Type D4 **
ESF – Extended
Super Frame
**
ESF – Extended Super Frame *
F4 – 4 Frame Multiframe *
F12 – 12 Frame Multiframe (D4/SF) *
F72 – 72 Frame Multiframe (SLC96) *
Line Code AMI **
B8ZS
**
HDB3 *
B8ZS *