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System settings
C1-C2 isdn / englisch / A31008-M373-B103-1-7619 / settings_bs.fm / 14.06.2004
Setting up/deleting an ISDN phone number (MSN)
Your ISDN connection offers you two telephone lines (B channels) that you can use at
the same time. You can establish up to ten separate phone numbers (MSN) on your base
station.
What is an MSN?
MSN = Multiple Subscriber Number. You can apply for up to ten different telephone
numbers for one multiple ISDN connection. An MSN is one of the phone numbers
assigned to you without an area code.
You telephone uses the MSN entirely as you require. The following differentiation is
made:
◆ Receive MSN: Phone numbers you may be called on. You can assign the receive
MSNs to specific internal users (terminals). Incoming calls are only forwarded to the
terminals to which the relevant MSN has been assigned. Terminals are, for instance,
handsets or answering machines.
◆ Send MSN: Phone numbers that are identified to the person you are calling. The
network operator calculates charges based on the send MSNs. You can assign a fixed
send MSN to each internal user.
Possible internal users are:
Depending on the functions provided by the base, you can assign internal phone num-
bers to the following internal users. Please refer to the operating instructions for the
base for the internal phone numbers that are available.
◆ Handsets
◆ Base telephone (CX203isdn, CX253isdn, SX303isdn, SX353isdn)
◆ Analogue devices (SX205isdn, SX255isdn, SX303isdn, SX353isdn)
◆ PC via a USB connection (SX205isdn, SX255isdn, SX303isdn, SX353isdn)
◆ Bluetooth devices (SX303isdn, SX353isdn)
◆ Data modules
◆ Answering machines integrated in the base
Example of how to assign an MSN:
You have applied for four MSNs, two for business use (MSN1, MSN2) and two for private
purposes (MSN3, MSN4). Four handsets are connected to a base. Two handsets (Int.11
and 12) and the answering machine AM 91 are intended for business use, and two
handsets (Int.13 and 14) and the answering machine AM 92 are intended for private
use.
Internal users Use Receive MSN Send MSN
Handsets Int.11 , 12 Business
MSN1, MSN2 MSN1
Answering
machine
AM 91
MSN1, MSN2 ---
Handset Int.13 Private MSN3 MSN3
Handset Int.14 MSN4 MSN4
Answering
machine
AM 92
MSN3, MSN4 ---
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