ZyXEL Omni TA 128 User Guide - Page 80

• AT&L0 - Phone 1 has the higher priority. • AT&L1 - Phone 2 has the higher priority. Scenarios of an Incoming Voice Call Outcome Phone 1 Phone 2 Global Call S120.2 AT&Ln MSN MSN (No Called (Default=0) (Default Phone 1 Phone 2 Matched Matched Party No.) n=0) ü û û - - Ring - û ü û - - - Ring Unassigned Unassigned û 0 - Ring Ring Unassigned Unassigned û 1 n=0 Ring - Unassigned Unassigned û 1 n=1 - Ring ü ü û 0 - Ring Ring ü ü û 1 n=0 Ring - ü ü û 1 n=1 - Ring û û û - - - - - - ü 0 - Ring Ring - - ü 1 n=0 Ring - - - ü 1 n=1 - Ring The default MSN sub-address (or EAZ) for 1TR6 (Old German ISDN) of the a/b adapters are as follows: • Phone 1: EAZ = 4 (&ZI7=4) • Phone 2: EAZ = 3 (&ZI6=3) A global call is an inbound voice call without the information of destination phone number (Called-Party-Number) which happens more often than not on some switches when the calling site is on the PSTN (analog telephone). By default, the TA128 will route the global call to both the POTS ports (make them alert). The one that picks up the phone earlier answers the call. AT Commands ATS87.0=0 ATS87.0=1 ATS87.1=0 Description Enable POTS port 1 to accept global calls.(Default) Disable POTS port 1 to accept global calls. Enable POTS port 2 to accept global 68