Meridian Nortel 1 Option 11C Technical Reference Manual page 296

Page 296 of 544
Figure 35
M2616 with Display Module and Key Expansion Module
553-3011-100 Standard 14.00
Meridian Modular Telephones
Transmit interface: +5 V through 10K DC bias resistance with maximum
current of 500 micro amps. The differential input impedance is 10K ohms.
Connects to pins 2 and 5 of the handset jack.
Receive interface: single ended output with output impedance of 180 ohms.
Connects to pins 3 and 4 of the handset jack.
January 2002