Connecting Telephone Lines 117Repeat steps 9 and 10. Each time that you assign an extension, theprevious extension is no longer used, and you can assign it to theappropriate port. When you are finished:■ The four original extensions (7258 through 7261) are assigned to theline card ports in the same order as the MAC addresses or portnumbers.■ The unused extension (7269) is again unused.ConnectingTelephone LinesAfter you have installed and configured the system for initial startup,connect the telephone company lines to the analog line ports so that youcan start receiving outside calls.Adding ExternalHardwareExternal devices connect to the front of the NBX system. See “WhatExternal Devices Can Connect to an NBX System?” on page 85.Connecting aMusic-on-Hold (MOH)Input DeviceUse a patch cord with phono-type connectors (stereo or mono) toconnect line level audio from any audio device that has a line-out jack tothe MOH jack on the front of the NCP. The audio input should be max 2Vpeak to peak.Adjusting Music-on-Hold (MOH) VolumeThe NBX 100 and V5000 have an external control for adjusting the MOHvolume. For other NBX platforms, use the volume control on the externalMOH device.To adjust the volume of music on hold on an NBX 100 or V5000:1 Use a nonferrous (plastic or aluminum) adjustment tool to adjust thevolume control on the front of the Call Processor to about mid-range.2 Use a 3Com Telephone to call another extension, and have the personput you on hold.3 While listening to the music, adjust the volume control on themusic-on-hold input device.Connecting a PagingAmplifierConnect the paging device to the paging connector on the front of theNCP. See the documentation for your paging amplifier for informationabout that device. For information about how to page from a telephoneon the NBX system, see “Paging” in the NBX Telephone Guide.
