Northern UTA220/UTA220k Isdn Addresses and Identifiers, Switch Version Default Mode Other Modes

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.

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

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

Table 4-3: UTA220 Switch Settings

PVCIC	TA Switch	TA Switch Version
	Type
0	NTI	DMS100 PVC-IC0
	DMS100
1	NTI	DMS100 PVC-IC1
	DMS100
2	National	N/A
	ISDN

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.

UTA220/UTA220k 4-5