4.1.7 DISA (Direct Inward System Access)
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No SecurityNone | CO Line Security | All Security |
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B | Is the dialed number |
| No |
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| an extension number or |
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| floating extension number? |
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| Yes |
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| C | Is the Walking COS/Verification | Yes | |
| Code Entry feature number dialed? |
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What is the dialed number? | No |
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Extension No./ | CO Line Access No. | Feature No.* |
| Other | |
Floating | + Telephone No. | (Absent Message, |
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Extension No. |
| FWD, etc.) |
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| D | ||||
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| The feature is set. |
The dialed number is sent to the CO line.
C
Is the extension | No | Is the extension | Yes |
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in DND mode? |
| busy? |
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Yes |
| No |
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E
Is the correct | Yes |
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PIN entered? |
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No | D |
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Reorder tone | B |
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Does the caller press | No | ||
while hearing the reorder | (DISA Reorder | ||
tone (Call Retry)? | |||
Tone time | |||
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Yes |
| expires) | |
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A
The call is directed to the extension. The caller hears a ringback tone.
No | Does the caller press | |
| while hearing a ringback | |
| tone (Call Retry)? | |
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| Yes |
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The call is disconnected.
Is Call Waiting | No | |
mode on? |
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Yes |
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E
Does the
destination
answer the call?
Yes
The call is established.
A
No
(DISA Intercept time expires)
The call is routed to the intercept destination. (DISA Intercept Routing No Answer)
G
| Does the destination | No |
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| answer the call? |
| (DISA Disconnect |
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| Time after |
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| Yes |
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| Intercept expires) |
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Continued on next page |
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The call is established. | The call is disconnected. |
*Feature numbers are available only when the Walking COS feature is used.
Document Version | Feature Manual |
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