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T1 Tie Trunk Connections
T1 trunks can be used to supply digital-emulated, tie trunk connections. These trunks can connect two MERLIN MAGIX Integrated Systems or can connect one MERLIN MAGIX Integrated System to another type of PBX (for instance, a DEFINITY G1.1 or DEFINITY ECS) or to the central office with digital (Switched 56 kbps) connections. Both T1-emulated voice tie lines and T1 Switched 56 tie lines can be used as tandem trunks to link MERLIN MAGIX Integrated Systems with one another or with MERLIN LEGEND (Release 6.1 or later), DEFINITY ECS, DEFINITY BCS, or DEFINITY ProLogix Solutions systems.
Tie trunk settings for these connections are similar to standard analog tie trunks. The only difference between setting up a digital-emulated, tie trunk and an analog tie trunk is that the Signaling Type setting (Type 1 Standard, Type 1 Compatible, Type 5 Simplex) is not meaningful.
Direction. The tie trunk direction may be programmed in one of the following ways:
Trunk Seizure Type. The trunk seizure type can be one of four settings. The setting should be compatible with the signaling on the far end. The trunk seizure type must be set separately for incoming (intype) and outgoing (outtype) calls. The intype and outtype settings for the trunk seizure type can be programmed as one of the following settings:
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Dial Mode. The dial mode must be set for incoming calls (Inmode) and outgoing calls (Outmode). The dial mode (inmode or outmode) can be set to either Rotary (factory setting) or Touch-Tone. Touch-Tone receivers are required on the remote communications system when the setting is Touch-Tone. In networked systems, use this setting for tandem tie trunks.
Dial Tone. The dial tone can be set to one of the following settings:
Answer Supervision Timing. Answer Supervision Timing sets a limit in milliseconds that an answer supervision signal must be present to be considered valid. The timing can be set to any value in increments of 20 ms from 20 to 4,800 ms. The factory setting is 300 ms, which should be used in networked systems for tandem tie trunks.
Disconnect Timing. Disconnect Timing sets a time limit, in milliseconds, that a disconnect signal must be present to be considered valid. The timing can be set to any value from 140 to 4,800 ms, in increments of 20 ms. The factory setting is 300 ms, which should be used in networked systems for tandem tie trunks.
