Toshiba DK424, dk14, DK40I Code 3 Pause Timing, Code 4 Flashing Timing, Code 5 Pause After Flash

System & Station

Program 12 – System Assignments, Basic Timing

Code 3: Pause Timing

Code 3 enables station users to program short and long pauses in Speed Dial numbers. Applies to pauses inserted in Speed Dial numbers used for both telephone voice calls and data calls from data interface units. The short pause length can be set system wide for either 1.5 or 3 seconds with this program. The long pause is always 10 seconds.

Code 4: Flashing Timing

When on a CO line, a station user can press the )ODVK button (or enter access code &QI￿7UQ￿￿￿￿) and the line opens (flash) for 2 seconds, 0.2 seconds (not used in the USA), or 0.5 seconds depending on this assignment. This choice reflects whether to disconnect and regain dial tone (2 seconds), or to use PBX or Centrex features which require a flash signal (0.5 seconds). It also applies to flashes inserted when dialing via Data Interface Units (DIUs).

Code 5: Pause After Flash

Some COs or Centrex facilities require a period of time after a flash signal before they can accept dialing signals. A selection of pause timing is available to automatically delay any dialing signals after flash. This timing applies to Speed Dial calls (with flash signals between the telephone number digits) as well as to manual dialing.

Code 7: Toll Restriction Timing

This represents the time that a DTMF receiver is held for Toll Restriction after dialing a CO line access code from a standard telephone.

Code 8: DNIS Ext. Network External, Call Forward, and DISA Disconnect Timer for Loop Start LInes

Disconnects DISA, Call Forward External and/or DNIS Telephone Network routed calls when made on loop start lines. Calls can lock-up (keep busy indefinitely) if the CO does not send a disconnect signal (CPC or AR) when the caller hangs up. This timer prevents loop start lines from locking up by disconnecting the call automatically when the timer expires, 4, 10, or 20 minutes from the start of the call. Callers will hear a warning tone and can reset the timer repeatedly by dialing “0”. This disconnect feature is only needed for loop start lines.

Code 9: QRCU3/K4RCU3/K5RCU/K5RCU2/RRCS/BRCS DTMF Receiver Inter-digital Release Time

With Code 9, one channel of the QRCU3, K4RCU, K5RCU, K5RCU2, RRCS or BRCS Dual-tone Multi-frequency (DTMF) receiver is seized when it is needed for the decoding process, such as for a standard telephone with a DTMF dial pad. When placing outgoing calls with DTMF standard telephones, the talk path to the outside party is not “cut-through” until the DTMF receiver circuit is released. The DTMF receiver channel’s release time can be programmed for between one and nine seconds (initialized timing is four seconds)—this is the time it takes to release the DTMF receiver circuit after the last digit is dialed.

The choice of timing is a trade-off between CO line time to connect and user speed. If the time is too long, the outside called party may answer before the voice path is “cut-through,” and the caller is not heard. If the time is too short, a standard telephone user inputting DTMF tones could be cut off prematurely from using other features, such as Speed Dial or Toll Restriction.

Standard telephones can also defeat Toll Restriction if the seize time is too short and they are not required to dial outgoing calls via LCR. Toshiba recommends that standard telephones should always be required to dial outgoing calls via LCR to prevent them from defeating Toll Restriction.

Note If no digits are dialed after accessing an outgoing CO line, the DTMF receiver remains seized for 15 seconds and then drops; however, the line remains connected.

System & Station

Strata DK Programming 5/00 3-45