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1.15 Optional Device Features
Feature Guide 113
is sent before the PBX recognises the incoming signal as fax data ( FAX Tone Detection [514]). If the
DISA OGM is short (0–5 s), in some cases the fax (CNG) tone may not be detected. In this case, it is
recommended to set the length of time the PBX continues to search for a fax (CNG) tone after
completing a DISA OGM to "10 s" or "15 s" through system programming ( DISA Wait Time after
OGM [505]). If the assigned DISA OGM has not been recorded, it is recommended to set the length of
time to "6 s" or "9 s" through system programming ( Intercept Time for Internal DISA [515]).
• It is programmable whether a ringback tone ( Ringback Tone Pattern [128]) or Music on Hold (
Music on Hold [111]) is sent to the caller when a DISA call is received ( DISA Ringback Tone [531]).
Feature Guide References
1.1.1.2 Intercept Routing
1.15.7 Built-in Voice Message (BV)
User Manual References
1.2.7 Accessing Another Party Directly from Outside (Direct Inward System Access [DISA])
3.3.1 Programming Information