System information

4-6 INSTALLING TELEVANTAGE
T1 ISDN PRI Protocols
TeleVantage currently supports the following ISDN PRI protocols over T1 lines. The drivers for
these protocols are installed automatically with Dialogic SR 6.0. Contact your TeleVantage
provider if your protocol is not listed.
Q National ISDN 2 (NI2). NI2 is required if you want to use the Two B-Channel Transfer
feature (See Administering TeleVantage, Chapter 5, “Using Two B-Channel Transfer.”).
Even if you are not using Two B-Channel Transfer, NI2 is preferred if your provider
offers multiple protocols.
Q 4ESS
Q 5ESS
Q DMS
Q QSIG
Q CR13
Q INS1500
Additional required hardware for T1 service
Robbed Bit T1 service requires the following:
Q Channel Service Unit (CSU).
Q Cable. Connects the CSU to the Dialogic board, provided by the CSU vendor.
ISDN T1 service requires the following:
Q Network Termination Unit (NTU). Most ISDN installations include an NTU from the
phone company, so you should ask your phone company for details. Connect the NTU
between TeleVantage and the digital line coming in from the phone company.
If you do not have an NTU available, you can use a standard Channel Service Unit
(CSU) that handles Extended Superframe Format (ESF) instead.
Q Network Termination type 1 adapter (NT1). Typically supplied by the phone
company.
Q Cable. Connects the NTU to the Dialogic board. When ordering one from your supplier,
specify the following:
Q Recommended cable type. Twisted-pair, in which each of the two pairs is
shielded and the two pairs also have a common shield.
Q Connectors. The cable connects to the board via a RJ-45 Modular connector on the
front or rear bracket of the board.
Connect the CSU or NTU between TeleVantage and the digital line coming in from the phone
company.
Note:
A Digital Service Unit (DSU) is not required because the Dialogic boards supply DSU
functionality.