User manual

110

8.4 Telephone Calls

To make a call, simply dial the number. The dial plan (i.e. the dialed digits) is

normally customized for each installation. The default dial plan is as follows (RFC

3435 format):

0[1-5]X|06[0-6]|06[8-9]|0[7-9]X|10[0-2]X|106X|10[8-9]X|112|118XX|116XXX|

xx|8XXXXXXXX|9XXXXXXXX|*#X.#|*XX.#|#X.#|XX.#|X.T

When a Call Server (SIP Proxy Server) is configured into the system, the dialed

digits are translated and routed by the Call Server to the correct destination as

registered with the Call Server.

If no Call Server is configured, calls can still be made using 4-digit extensions,

rather than using full IP addresses. The originator translates the dialed-digits to a

destination device as follows:

First Digit: Line identifier (for multi-line gateways)

Remaining digits: Host number part of an IP address. The Network number part

is considered to be the same as the caller’s IP address.

Caller ID

The calling number is transmitted to the analog line for CLASS recognition. This

functionality is enabled by default and cannot be disabled.

Retain a call

During conversation, to make a second call press the flash key and dial the second

phone number. This action will put the first established call on hold. To switch

between calls press flash key + number 2. To finish the communication with the

active call press flash key + number 1. This action will reactivate the communication

with the call on hold.

Conference Calling

To turn a two-party call into a three-party conference call, press flash and dial the

third party. Wait for the party to answer, then press flash key + number 3. In

conference mode, the conference initiator performs the audio bridge/mixing

function – there are only two voice streams established.

Call Waiting

If call waiting is enabled on a line, and you hear the call waiting tone during a call,

press flash key + number 2 to answer the second call. The first call is automatically

placed on hold. To switch between calls, press flash key + number 2 again.