Cabletron Systems CSX100 series User Manual - Spids and Directory Numbers
ISDN and Ordering Issues
7
SPIDs and Directory Numbers
The Network Service Provider will give you the following information for
identifying the ISDN line and devices. In some countries, some of these
number/addresses are not implemented and will not be provided.
Directory Numbers (DNs)
Phone numbers are assigned by the ISDN service provider for each
device operating on the line. In most cases, one DN is assigned for each
B-channel. Up to eight DNs can be assigned to provide numbers for
additional devices on the ISDN line (see Multi-Point).
Service Profile Identifications (SPIDs)
North America: SPIDs are assigned by the ISDN service provider and
identify the services and features that the switch provides to the ISDN
device. The SPID is often derived from the directory number,
concatenated with other digits.
Outside North America: SPIDs are not required outside of North
America.
Telephone Switch Parameters
The following table contains the recommended provisioning for the three
switches available in North America.
When ordering your ISDN service, some of the following information
(depending on your switch) will be needed.
Provisioning
Information
AT&T 5ESS
w/custom software
National ISDN
(NI-1)
DMS-100
B1 channel
circuit switched data &
voice
circuit switched data
& voice
circuit switched
data & voice
B2 channel
circuit switched data &
voice
circuit switched data
& voice
circuit switched
data & voice
D channel
signaling only
signaling only
signaling only
Multipoint
yes
yes
n/a
Terminal type
A
A
n/a
Display
off
off
n/a
Terminal endpoint
identifier (TEI)
dynamic
dynamic
dynamic
Call appearances
2
2
-
Call preference
idle
idle
-
Additl. Call offerings
yes
yes
yes
Nail up
none
none
none
Ringing indicator
-
-
yes
Release key
-
-
yes