User Manual

VoiceXtender Modem Installer’s Guide
System Planning
2-12 Rev. A - 8/97
❚ Master/Slave: The modems connected to the switch or centrex (all in one
location) are configured as masters, and the modems connected to the
telephones are configured as slaves.
(SW2-2)
❚ Sleep/Normal: Set all modems to Normal.
(SW2-3 OFF)
❚ Pseudo-Random Noise Sequence: For each modem pair, specify a unique
pseudo-random noise (PN) sequence to help separate adjacent channels. In
this example, channel 1 uses PN sequence 1, channel 3 uses PN sequence 2,
and channel 5 uses PN sequence 3.
(SW2-6, 2-7, 2-8)
NOTE VoiceXtender modems can be burst synchronized with other VoiceXtender VX64modems
and with AirLink model 64MP, 128 and 256 data modems. If VX64 modems are burst
synchronized with data modems, one of the data modems must be configured as the
synchronizing unit.