Each Bri / Brin Access Has The Following Features; Isdn Services - Samsung DCS Programming Manual

DCS
COMBINED PROGRAMMING MANUAL

Each BRI / BRIN access has the following features:

Each port operates in either LT-T or LT-S mode. Every setting is done by MMC - there is
no jumper or DIP switch to set. You can connect an NT line or ISDN terminals. (See note,
below.)
For LT-S ports, you can decide whether or not power is supplied to that port by MMC
419.
32 numbers (DCS—range 7801 to 7832) or 24 numbers (Compact II—range 7801 to
7824) are reserved for terminals attached to the LT-S ports. Each number can be as-
signed to only one port. However, a port can have more than one number. (That is, two
ISDN terminals with the same MSN number cannot exist in different LT-S ports.)
Each S bus must be terminated with a 100
0
did not have this resistor. However, it is fitted to cards manufactured from mid 1997. It is
important that this termination is present on each installation, and should be checked by
the installer.
Note: 1. In BRI, LT-T and LT-S mode can be selected only by MMC programming. However, you
should connect the Tx and Rx cable pair from the MDF correctly. Tx and Rx connections are
reversed between LT-T and LT-S mode (see Table 15).
2. If you are connecting a T0 port to an NT, take care if there is a termination present some-
where other than on the BRI card on the bus.

ISDN Services

Outgoing calls when origination party is non-S
When an extension seizes an ISDN TRK or S
bearer capability (BC) and high layer compatibility (HLC) will be coded as in Table 2.
ORIGINATION
DGP (Digital keyphone)
SLT (ICM/CO ring in MMC 208)
SLT (DATA ring in MMC 208)
Incoming calls when destination party is non-S
When an incoming call is present on the ISDN TRK or S
following condition is satisfied (Table 3). Calls with other BC or HLC will be rejected.
Table 2 - Coding of BC/HLC when an extension seizes an
ISDN TRK or S0 terminal
termination resistor. The original BRI cards
terminal
0
terminal attached to the system, the ISDN
0
BC
Speech
3.1 kHz Audio
3.1 kHz Audio
terminal
0
port, the call will be accepted if the
0
3–10
SPECIAL APPLICATIONS
NOVEMBER 2001
HLC
Telephony
Telephony
Telephony