Nortel Meridian M3900, Reference Manual

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M3903 enhanced telephone 45
Meridian SL-100 M3900 Meridian Digital Telephones Reference Guide
Message Waiting and Call Status Indicator (MWI)
The MWI LED lights to show a message is waiting. This indicator
visually alerts that a call is holding. The LED flashes to indicate an
incoming call. It winks when a call is holding.
Table 8
Key numbers
Key number Location
Key 1 Labeled as Prime DN (shown as 5000).
Key 2 Labeled as second Line/Feature (shown as 5001).
Key 3 Labeled as Prime DN, accessed by using the Shift key (shown as
5000).
Key 4 Labeled as second Line/Feature, accessed by using the Shift key
(shown as 5001).
Keys 5-16 Blocked.
Key 17 Key labeled as Message.
Key 18 Transfer (CXR).
Key 19 Six-party Conference (CNFC06).
Key 20 Call Forward (CFU).
Key 21 Ring Again (RAG).
Key 22 Call Park (CPK).
Key 23 Call Pick-up (CPU).
Key 24 Speed Call Short (SCS), Long (SCL), or User (SCU).
Key 25 Privacy release (PRL).
Key 26-27 Null.
Key 28 Callers List.
Key 29 Redial List.
Key 30-32 Null.
Note: Keys 18-25 and 28-29 are the keys labeled as the four context-sensitive softkeys.