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Connect to PT, SLT
Connect to Network
External Paging
External Music
Connect to KX-T30865
Door Opener
Connect to PC, Printer
Port Name Brief Description
1 AS
PAS
4F
4F
4E
4F
4E
Port Type
Extn.
PSTN
Paging
Ext. Music
Doorphone
Door Opener
EIA (RS-232C)
Paging
Door
Opener
5-8 Appendix
5.2 Specifications
Port Type Classification
Maximum associated cable loss
for EXTN. port
Port to port loss
Send and receive loudness
ratings on port to port basis
Extension (1AS) port
PT: Max cable loss 0.34 dB (140 m max for ø 0.5 mm)
SLT: Max cable loss 0.87 dB (698 m max for ø 0.5 mm)
Loss across switch, PAS → 1AS Loss=1.13 dB (Not through–fed system)
Send loudness rating (1AS → PAS) : +3dB (0km)
Receive loudness rating (PAS → 1AS) : -6 dB (0km)
3 ringers can be supported with extension wiring up to 698 m.
Notes
• Extension ports 01 through 24 may be used for off premise extensions in which
case cabling would be required by BS 6701:Part 1 1986 to be equipped with
over voltage protection.
• When using separately approved extension telephones, the best overall
performance of the PBX system will be obtained by using extension telephones
of impedance class A clause 4.3.2.1. of BS 6305:1982.
Extn. Port**
PSTN Port**
Paging Port (output)*
Ext. Music Port (input)*
Doorphone Port*
Door Opener Port
EIA (RS-232C) Port
* These ports do not respond to address signalling.
** These ports provide DTMF and Loop Disconnect Signalling.
Port Types between which Call Paths can be established
A: Allowed X: Not allowed N/A: Not applicable.
A
A
X
A
X
X
X
A
X
X
A
X
X
X
X
X
X
N/A
X
X
X
A
X
X
X
N/A
X
X
X
X
X
X
X
N/A
X
A
A
X
A
A
X
X
To
Ext.
Music
Door-
Phone
Extn. PSTN
From
EIA
(RS-232C)
X
X
X
X
X
X
N/A
PSQX1708ZA-13E.QX 99.10.15 1:11 PM Page 8