Support Of At&T's 4Ess Switch Protocol - 3Com NBX 100 Administrator's Manual

254 C 3: D
HAPTER EVICE
Support of AT&T's
4ESS Switch Protocol
C
ONFIGURATION
Table 49 Span Parameters (continued)
Parameter T1 DS1 Options
Default N/A
Outbound
Service
*If this value changes, the card reboots itself and all current calls on the card are lost.
**If this value changes, the card is temporarily offline, and all current calls on the card are lost.
*** See "Support of AT&T's 4ESS Switch Protocol"
5 Click Apply.
6 Enable the On Line check box to bring the span online.
The span does not come online unless the card is online.
7 Click OK to effect the changes.
You can select AT&T's 4ESS switch protocol when you configure a T1
Digital Line Card for PRI (Primary Rate Interface) operation. If you select
the 4ESS protocol, you can optionally use Call By Call Service
Configuration which enables you to select one of three access services:
Long Distance — The default service if the customer selects the 4ESS
■
protocol, but purchases no other services. Long Distance can be used
with SDN but not with MEGACOM.
MEGACOM — A high-volume outward calling service. MEGACOM
■
can be the default setting.
SDN (Software Defined Network) — A premises-to-premises service
■
with voice and voice-grade data transport, plus a number of
customer-controllable call management and call monitoring features
(for example, Virtual Private Networking). You cannot configure SDN
as the default setting but you can configure the NBX system dial plan
to use SDN.
ISDN PRI (T1) Options
Determines the type of outbound call if no type
is specified in your dial plan commands.
If you purchased MEGACOM service from your
service provider, you must select it.
If you purchased only long distance service or
SDN (Software Defined Network) service, select
Standard (LDS). SDN cannot be the default
selection.
on page 254.