Enterasys Networks CSX6000 - Manual (Page 123)

Central Site Remote Access Switch 123
C ONFIGURING R ESOURCES AND L INES
Lines
NI-1 and DMS100 switch types, contact your Service Provider for the number of data links
required.
The table below summarizes the number of data links and SPIDs that are required for each switch
type.
When adding a data link for BRI lines, designate whether to use Automatic TEI Negotiation.
Automatic TEI Negotiation is used UNLESS this is a point-to-point NTT line. If you do not use
Automatic TEI Negotiation, a TEI value is required. The default TEI value is 0, which is normally
correct for a point-to-point NTT line. For PRI lines, use the default TEI value of 0.
Data links are handled differently for DMS and NI-1 switches. For most switches, the BRI line has
only one phone number (for the Data Link), but it can handle two calls (one for each bearer
channel). For DMS and NI-1 switches, the BRI line has two SPIDs, and two phone numbers. Note
that either SPID can use either bearer channel. There is no one-to-one correspondence. You must
enter the number of digits to verify (starting at the right-most digit), so that when the system
receives a phone call it can determine on which bearer to accept the phone call. The maximum
number of digits should be 7, which is the default value in most cases.
S ERVICE P ROFILE ID (SPID)
For basic rate lines only. SPIDs are only required for DMS100 and NI-1 switch types. A SPID is a
number that identifies ISDN equipment attached to your ISDN line. Depending on the type of
ISDN service you have, you may have one, 2, or no SPIDs. When ordering your ISDN service, your
service provider should supply you with SPID information.
A SPID is usually derived from the ISDN line’s telephone number. It may include the area code. It
may also include a special prefix and/or suffix (for example, a prefix of 9 for Centrex lines).
The SPID format for AT&T 5ESS NI-1 Service is:
01nnnnnnn0tt
where nnnnnnn is the 7 digit phone number (no area code) of the BRI line
tt is a user assigned 2 digit terminal Id code, 00 is normally used
The SPID format for AT&T 5ESS Custom Multipoint Service is:
01nnnnnnn0
where nnnnnnn is the 7 digit phone number (no area code) of the BRI line
Switch Type Number of Data
Links
Number of SPIDs Number of
Directory Numbers
DMS100 custom 2 2 2
NI-1 1 or 2 1 or 2 1 or 2
all other 1 0 0