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1-2
Integration Volume
1.2
STANDARD DTMF INTEGRATION
The standard connection between the Octel 200/300 and PBX phone systems is a 2500-type single line
extension. The Octel 200/300 Line Interface Cards (LIC) accept a series of PBX single lines. By
emulating the touchtone telephone sets the PBX is expecting, the Octel 200/300 performs all the
operations that are normally possible from a single-line phone — receiving calls, taking messages,
transferring calls, and initiating PBX functions by sending DTMF digits or codes.
Standard DTMF Integration depends on the PBX's capabilities and uses only standard Octel 200/300
features. Only PBX call record information delivered as DTMF signals can be processed by a system
using Standard DTMF Integration. After an incoming call has had the initial called party's ID processed,
the Octel 200/300 reverts to standard operation.
Message Waiting Indication. A system using Standard DTMF Integration may use PBX message
waiting indicators if a touchtone-type extension can send a code to perform the function. Typically, the
message waiting indicator is a lamp on the telephone set or a distinctive stutter dial tone provided when
the telephone receiver is off-hook.
The following system parameters allow the entry of DTMF digit codes to allow the Octel 200/300 to turn
MWI ON and OFF:
System Parameter 79 — LAMP MW: "ON" PRE-EXTENSION DIGITS
System Parameter 80 — LAMP MW: "ON" POST-EXTENSION DIGITS
System Parameter 81 — LAMP MW: "OFF" PRE-EXTENSION DIGITS
System Parameter 82 — LAMP MW: "OFF" POST-EXTENSION DIGITS
All possibilities for code digits to precede or follow the desired mailbox are allowed. Code entries that
are not applicable may be left blank.
Called Party Identification. Certain phone systems provide the extension number of the called party
when forwarding calls to the Octel 200/300. When this information is provided in DTMF tones preceding
the forwarded call, the Octel 200/300 can process the call as if a caller had entered the called extension.
A standard integrated Octel 200/300 can be configured to accept these forwarded calls in CX or MX
mode. The call is extended to the called person's mailbox, and the caller hears the called person's
greeting and may leave a private voice message. In this form of integration, the caller is not required to
reenter the called person's extension as would normally be the case in CX or MX mode.
Octel 200/300
S.4.1
PB60019-01
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