Siemens GIGASET SX255 - Manual (Page 20)

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The quick way into the world of ISDN
Gigaset SX205-255i / englisch / A31008-X255-B100-1-7619 / isdn.fm / 09.10.2003
The quick way into the world of ISDN
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.
Your 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
MSN's to specific internal users (terminals). Incoming calls are only forwarded to the
terminals to which the relevant receive MSN has been assigned. Terminals can be
handsets or answering machines.
◆ Send MSN: Phone numbers that are assigned to the person you are calling. The net-
work operator calculates charges based on the send MSN's. You can assign a fixed
send MSN to each internal user.
Potential internal users are:
◆ Handsets, to which you can assign the internal numbers 11 to 18.
◆ Data modules (page 30), to which you can assign the internal numbers 41 to 48.
◆ The integrated answering machines (on SX255isdn), which are assigned the inter-
nal phone numbers 91 to 93.
◆ PC via USB interface, for which the internal number 40 is set aside.
◆ Analogue terminals, to which you can assign the internal numbers 21 or 22.
Example of how to assign an MSN:
You have applied for four MSN's, 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.
Further information for dealing with MSNs, e. g. setting the ring delay for each MSN,
can be found in the handset operating instructions.
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 ---