Gigaset SX353 isdn SX353 User Manual

C45 isdn / GB-IRL / A31008-M1753-X101-1-7619 / settings_bs.fm / 18.04.2006

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.

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 net-

work 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.

Handsets

Int.11 , 12

Business

MSN1

, 

MSN2

MSN1

Answering 

machine

AM 91 

MSN1

, 

MSN2

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Handset

Int.13

Private

MSN3

MSN3

Handset

Int.14

MSN4

MSN4

Answering 

machine

AM 92 

MSN3

, 

MSN4

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