ISDN Software Reference Dialogic ISDN Protocol Support

2.3. Dialogic ISDN Protocol Support

A protocol is a set of rules or standards that defines the format and timing of data transmission between two devices. Like any evolving technology, a single standard ISDN implementation has yet to be agreed upon worldwide. Standards have been established in a number of countries or regions. The following table lists the protocols that Dialogic currently supports.

Table 1. ISDN Protocols

PRI T-1

PRI E-1

BRI/SC

BRI/2

4ESS
5ESS
DMS/250
DMS/100
National ISDN-2
NTT (INS1500)

1TR6
DASS2
DPNSS
Euro-ISDN (CTR4)
Q.SIG
TPH
VN3

DMS-100 Custom
ETS300
(Euro-ISDN) (CTR3)
INS64
Lucent 5ESS Custom
National ISDN-1 (NI1)

ETS300
(Euro-ISDN) (CTR3)
Multi-link PPP
(Channel bundling)
PPP/MP

NOTES:: 1. Only one protocol may be configured per digital network interface at a given time.

2. Refer to the package release notes or system software catalog for updated protocol support information. Also, refer to the Dialogic Worldview website at http://www.dialogic.com and to the Dialogic FirstCall Info Server website at http://support.dialogic.com.

DPNSS and Q.SIG are ISDN PRI E-1 protocols that are used to pass calls transparently between PBXs. Unlike other PRI E-1 protocols, DPNSS and Q.SIG require special ISDN API library functions for processing calls placed on hold. Other ISDN library functions have modifications that are specific to the DPNSS protocol. For a listing of the functions that are specific to DPNSS and Q.SIG, see Chapter 4. ISDN Function. For more detailed information on the DPNSS and Q.SIG ISDN library functions, see Chapter 5. ISDN Function Reference.

NOTE:: To support DPNSS, Dialogic E-1 boards, such as the D/300SC-E1 or the DTI/601SC, must be software-enabled. The enablement utility can be downloaded from the Dialogic FirstCallTM InfoServer website. However, an order form must also be filled out to request an access code to use the DPNSS enablement utility. For more information on how this works, see the Dialogic FirstCallTM InfoServer website.

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