Siemens GIGASET SX255 User Manual

Page 42

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ISDN glossary

Gigaset SX205-255i / englisch / A31008-X255-B100-1-7619 / glossary.fm / 09.10.2003

Call divert (via second B channel) / internal call divert

While external call divert takes place in the local telephone exchange of the network

provider, internal call divert is implemented by your telephone. Your telephone for-

wards the call via the second line of your ISDN connection. This means both phone

lines are engaged for the duration of the call. You pay the charges for the connec-

tion to the forwarding number. However, you save yourself the network provider's

charges for this function.

Call forwarding during the call phase

CD, Call Deflection. Must be explicitly enabled by the network provider for each ISDN

connection. CD enables an incoming call to be forwarded to any phone number

while it is ringing, without having to answer the call. Because the caller cannot

affect on where it is forwarded (for example, to a mobile phone), you will pay the

resulting charges. The caller must only pay the normal telephone charges to the con-

nection he dialled.

Call transfer (e.g., for ISDN PABX's)

ECT, Explicit Call Transfer. User A calls User B. He puts the connection on hold and

calls User C. Rather than connect everyone in a three-party conference, A now trans-

fers User B to C and hangs up.

Call waiting

CW, Call Waiting. Service provided by the network provider. An acoustic signal dur-

ing a call indicates that another caller is waiting. In addition, ISDN phones indicate

this with a displayed message. You can then decide whether to accept or reject the

second call.

Call waiting protection

Deactivates the call waiting signal.

Callback when the call is not answered

If a user does not respond when called, a caller can arrange an automatic callback.

As soon as the destination phone has completed a call and is free again the caller is

rung back. This service must be supported by the exchange. The ringback request is

automatically cancelled after approximately 2 hours (depending on the telephone

exchange.

Callback when the number is busy

Callback must first be activated on the caller's terminal. A connection is established

automatically as soon as the destination phone is no longer busy. As soon as the

connection is free the caller is rung back. As soon as the caller lifts his receiver the

connection is made automatically.

Caller identification

Displays caller's phone number, name or type of connection (e.g., exchange/inter-

nal) on the telephone screen.

Caller list

Depending on the setting, the calls list contains callers you haven't reached, or those

you have spoken to. The last 20 missed calls and the last 20 accepted calls are stored

with their phone number, date and time. If you wish to do so, you can return the call

to these users directly from this list.

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