Isdn addresses and identifiers – Northern UTA220/UTA220k User Manual

Page 39

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UTA220/UTA220k

4-5

ISDN

NT switches support three Protocol Version Control Issue
Codes (PVCICs), depending on the software version loaded in
the switch. Refer to Table 4-2.

Set the Switch Version option on the TA according to Table
4-3.

ISDN ADDRESSES AND IDENTIFIERS

The TA contains several stored numbers

SPID, DN, and TEI

(Terminal Endpoint Identifier)

used by the network to identify

the TA.

Each logical ISDN link has an SPID that defines the profile of
services and parameters used by the terminal. The SPID is
selected by the network carrier and must be configured into the
TA before it can be used. The SPID is a string of characters or
digits, depending on the switch.

The DN is part of the service profile and is analogous to the
telephone number on the standard telephone network. The DN
identifies incoming calls. On some switches (NTI and NI-1),
the DN must also be configured into the TA; on other switches
(AT&T), the DN is not required.

Table 4-2: Northern Telecom Switch Modes

Switch Version

Default Mode

Other Modes

BCS29

PVCIC=0

None

BCS30

PVCIC=0

None

BCS31

PVCIC=1

PVCIC=0

BCS32

PVCIC=1

PVCIC=0

BCS33

PVCIC=1

PVCIC=0

BCS34

PVCIC=2

PVCIC=0, 1

BCS35

PVCIC=2

PVCIC=0, 1

BCS36

PVCIC=2

PVCIC=0, 1

Table 4-3: UTA220 Switch Settings

PVCIC

TA Switch

Type

TA Switch Version

0

NTI
DMS100

DMS100 PVC-IC0

1

NTI
DMS100

DMS100 PVC-IC1

2

National
ISDN

N/A

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