Toshiba Strata DK14 General Description Manual page 227

Each PhDN can have a dedicated Message Waiting PhDN/MW button for message notification for
the person or department associated with the PhDN. Up to four PhDN/MW buttons can be
programmed into each telephone.
PhDNs (the 500-series extension numbers on the keystrip in this example) are usually associated
with a function such as an "800" number for a technical support group. A specific PDN is usually
associated with a person.
Incoming calls come into a PDN from the top down. For example, incoming calls to Station 210
rings first at the top 210 line; the second call rings at the 210 line below it; and the third call rings
at the bottom 210 line. Auto preference for DNs are from the bottom PDN up. A station PDN
shows busy on Busy Lamp Field when the station is off-hook on any DN, CO line or Tie line.
PhDNs do not display Busy Lamp indication.
Table 9 Maximum Multiple DNs
Type of Digital
Number Telephone
PDNs 4 (same DNs)
SDNs 15
PhDNs 8 (different DNs)
Total DNs 20
1. Total of 16 combinations of PDN and [SDN] per telephone.
2. PDNs and SDNs are the same number.
Benefits
Multiple DNs provide the ultimate in call coverage flexibility. They are convenient and provide an
easy way to answer each other's calls or general calls to a departmental group. This is both a
common requirement in most large installations and has many useful applications in smaller
organizations as well.
Strata DK Feature Description 5/99
DK14 DK40i
10 28
1 2 2
10 28
10 28
20 56
DK424
RCTUA RCTUBA/BB
32 80
2 2
32 80
32 80
64 160
Features
System Features
RCTUC/D RCTUE/F
240 336
2 2
240 336
240 336
480 672
73