3Com NBX 100 Administrator's Manual page 212

212 C 3: D
HAPTER EVICE
C
ONFIGURATION
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.
Selecting the 4ESS Protocol
To select the 4ESS protocol:
1 On the Digital Line Cards tab, select ISDN PRI Span List from the Select
Device Type drop-down list and click Apply.
2 From the CO Switch Protocol drop-down list, select AT&T Custom - 4ESS.
3 Click OK to enable the 4ESS protocol and exit from the dialog box.
Otherwise click Apply to enable 4ESS, stay in the Modify Span dialog box,
and configure Call-By-Call Service. See
in the next section.
Configuring Call-By-Call Service
You order the optional Call-By-Call Service from your long-distance carrier
only if you order the 4ESS protocol. 3Com does not support Call-By-Call
Service with any other protocol.
To configure Call-By-Call Service:
1 In the Modify Span dialog box, click the Enable Call-By-Call Service check
box.
2 In the Carrier Identification Code text box, type the identification code for
your long-distance carrier.
Your long-distance carrier can supply this code when you order PRI
services, or you can ask the carrier for their code number. Another way to
obtain the code is to access the web site for the North American Number
Plan Administration (http://www.nanpa.com). In the menu in the left
frame, expand Number Assignments, and click Carrier Identification
Codes. Follow the instructions to download and unzip the two files
(Current Feature Group B (950-XXXX) CIC Assignments and Current
"Configuring Call-By-Call Service"