Making Telephone Calls - Comtrend Corporation CT-6382D User Manual

8.1.1 Making 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 delivered by
Comtrend allows dialing of 4-digit extensions or direct IP addresses. Shorter
extension numbers (e.g. 3-digits) can be dialed by completing the dial string with a
final #.
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.
For example, if a caller at address 10.136.64.33/24 dials "2023", the call will be
placed to the second line at address 10.136.64.23. All devices have to be on the
same Class C subnet (24 bit subnet mask).
To dial an IP address directly, dial the IP address digits, using keypad * as the dot.
Complete the address with a final * or #. When using IP address dialing it is not
possible to specify which line at a gateway is called, so the gateway always routes
IP-address dialed calls to the first line.
Network busy tone (fast busy) will be played for unknown or unreachable
destinations.
To answer calls, simply pick up the phone or press the handsfree button.
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