Table 3-9: Fxs Port Specifications; Figure 3-8: Fxs Blades And Fxs Channels Per Fxs Connector (Rear Panel) - AudioCodes MediaPack Series Hardware Installation Manual

The FXS channel (port) number range of each FXS connector on an FXS blade is indicated
by the labels (FXS 1-24, FXS 25-48, and FXS 49-72) located on the rear panel above the
FXS blades, as shown below:

Figure 3-8: FXS Blades and FXS Channels per FXS Connector (Rear Panel)

The table below lists the specifications of the device's FXS ports.
Specification
Analog Lifeline (PSTN
Fallback)
Interface Type
FXS Signaling Formats
FXS Loop Impedance
Off-hook Loop Current
Ring Voltage (Sine)
Ring Frequency
Maximum Ringer Load
Caller ID
Polarity Reversal / Wink
Hardware Installation Manual

Table 3-9: FXS Port Specifications

The FXS blade supports analog lifeline (PSTN Fallback). For
more information, see Section 5.4 on page 41.
FXS connection via 50-pin CHAMP connector
In-band signaling DTMF (TIA 464B)
Up to 1500 ohm (including phone impedance)

25 mA (maximum) on all ports

35 mA (maximum) on six ports per FXS Blade (for
emergency / elevator phones)

54 Vrms

80 Vrms on six ports per FXS Blade (for emergency /
elevator phones)
Note:

Balanced ringing only.

Simultaneous ringing of 288 phones (72 per FXS Blade
given REN 3 load)
25-100 Hz
Ringer Equivalency Number (REN) 3
Bellcore GR-30-CORE Type 1 using Bell 202 FSK
modulation, ETSI Type 1, NTT, Denmark, India, Brazil,
British and DTMF ETSI CID (ETS 300-659-1)
Immediate or smooth to prevent erroneous ringing
22
Description
Document #: LTRT-28030
MP-1288