Oki BV1250, Installation Manual

Page: 124 / 344

FXO WORKSHEETS Oki BV1250 Installation Guide
Page 114 of 334 Revision 1.0
PAD In and PAD Out (PAD_VALUE)
For each port, use the PAD In and PAD Out fields to record the
amount of PAD to be introduced into the communication between a
BV1250 unit and other devices.
PAD is a voice line gain/loss function expressed in decibels (dB)
introduced into communications between a BV1250 unit and the
terminating device (e.g. Telephone/PBX/KTS). This feature is used to
emulate the loss normally generated in PSTN network transmission.
The following values are provided in the MCS list box.
+14dB, +12dB, +10dB, +8dB, +6dB, +4dB, +2dB, 0dB, -2dB,
-4dB, -6dB, -8dB, -10dB, -12dB, -14dB, -40dB
The recommended value for a BV1250-E&M/E&M-OD unit is 0dB
since the PBX introduces its own padding towards its extensions.
The recommended value for a BV1250-AP/FXS unit is –12dB.
In the sample, the PAD In and PAD Out parameters for all ports are
configured to the defaults for a BV1250-AP/FXS unit, In = 0dB
and Out = -12dB.
In a few cases, and particularly in the case of FXO units, these
settings may need to be adjusted. A typical value to boost voice from
a PSTN connection will be about +4 dB. See Appendix F: for details.
Care must be taken to calculate the end-to-end gain/loss when
reconfiguring the PAD In and PAD Out parameters since these
settings can have a cumulative effect when both are configured.