Siemens 2060isdn - Manual (Page 97)

Frequently asked questions
97
I_KAP07.FM5
Gigaset 2060isdn, Inland:
8.12.98 A30853-X210-B101-1-19
● Once the voice-call connection has been set up the subsequent characters are sent via the
D channel unless temporary DTMF dialing is activated, in which case the digits are sent as
DTMF characters in the B channel. This switchover is required for accessing external devices
such as answering machines, etc.
14. Gigaset 2060isdn behind a PBX
What are the important points with regard to operating a Gigaset 2060isdn on the S
0
bus of a
private branch exchange?
● Behind a PBX, the Gigaset 2060isdn can access only the features supported by the PBX. In
contrast to the network provider, PBXs must sometimes interrupt the D channel (signaling
channel) so that features can be implemented by the PBX itself. The Gigaset 2060isdn trans-
mits only the protocol elements defined in the Euro-ISDN set, in other words it does not
transmit PBX-specific signaling in the D channel.
● Example - conference feature: initiation of a conference is always interpreted as an internal
conference by the PBX, whereas the Gigaset 2060isdn acts as if it were connected to a cir-
cuit provided by the network provider.
● Example - call forwarding: in the point-to-point mode PBXs usually implement call forwarding
themselves with a second B channel. These PBXs usually have multiple ISDN basic access-
es at their disposal. This arrangement is practical because call forwarding in the exchange
always applies to the entire access, irrespective of the number of B channels affected.
Call forwarding with the Gigaset 2060isdn behind PBXs works only when the PBX interprets
the protocol correctly.
15. Roaming
Roaming means searching for a user across all base stations of a multicell system. If a caller dials
the multiple subscriber number (MSN) of the mobile unit, all base stations are automatically
searched for the user in question. Only the base station at which the mobile unit is currently reg-
istered switches the connection.
The Gigaset 2060isdn supports roaming.
16. Handover
Handover is the automatic/semi-automatic transfer of existing external calls from one base sta-
tion to the next. This function ensures that mobile users can move freely throughout the entire
radio-coverage area of a multicell system, using their mobile units as they go.
The Gigaset 2060isdn supports handover as follows: If multicell operation is configured a range
warning tone sounds automatically as the user approaches the limit of a radio cell. The menu
offers the “CHANGE” function. The user has to confirm this function and the call is parked until
the mobile unit has registered with the new base station. The call is then handed over automat-
ically to the new station.