Lenovo ThinkPad T520i (English) User Guide - Page 84
Enable Short Phase 1 only.
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Table 3. Modem command list (continued) Command Description Syntax +PMHT Modem-on-Hold Timer +PMHT= +PMHR +PMHF +PQC Initiate Modem-on-Hold Modem-on-Hold Hook Flash Shortened Phase 1/2 control +PMHR +PMHF +PQC= Values 0: Deny modem-on-hold Request. 1: Grant MOH with 10 sec. timeout. 2: Grant MOH with 20 sec. timeout. 3: Grant MOH with 30 sec. timeout. 4: Grant MOH with 40 sec. timeout. 5: Grant MOH with 1 min. timeout. 6: Grant MOH with 2 min. timeout. 7: Grant MOH with 3 min. timeout. 8: Grant MOH with 4 min. timeout. 9: Grant MOH with 6 min. timeout. 10: Grant MOH with 8 min. timeout. 11: Grant MOH with 12 min. timeout. 12: Grant MOH with 16 min. timeout. 13: Grant MOH with indefinite timeout. 0: Enable Short Phase 1 and Short Phase 2. 1: Enable Short Phase 1 only. 2: Not supported. 3: Disable Short Phase 1 and Short Phase 2. 66 User Guide