ZyXEL Elite 2864 User Guide - Page 104

Code Bits Q2 (1) (0) Bin. Dec. Description 1 2 The modem does not return result codes when answering. No RING or CONNECT message. Reserved. Note: Bits (6,5,4,3) enable ring detection on a combination of four ring types. All zeroes enable ring detection on any ring longer than 100ms. Please refer to Chapter 13 for details on EDR operation. S41 Bit-mapped register, default: 0: Code Bits (7) (6) (5) (4) (3) (2) (1) (0) Bin. Dec. Description 1 128 Ignores calling tone. Not for fax detection. 1 64 Does not answer on the first ring, forces S0≥2. 1 32 DSR follows CD, off for 0.5s after a CD on-off transition. (See &Sn) 1 16 If one of X2-X7 is set, the modem waits for the number of seconds set in register S6 before dialing, and it ignores the dial tone detection. 1 8 Enables ITU-T signals 140 and 141 on EIA-232D interface. 1 4 Extends the retrain time-out timer to 5 minutes. (See *Qn, S27b6) 0 0 Selects flag idle in V.25bis HDLC. (Default; see *I1, S17b6) 1 2 Selects mark idle in V.25bis HDLC. 1 1 Special MNP compatibility. (See also &Kn, S27b0, S38b5) S42 Bit-mapped register, default: 0: Code Bits (7) (6) Bin. Dec. Description 1 128 CD pulses off for 0.5 sec at carrier loss, CD is always on otherwise. 1 64 Disables RINGING result code. (See ATXn) 8-18