Tieline Merlin User Manual page 105

Module 1
POTS Codec
(Monitor Modem Tone)
POTS Codec
(Monitor Modem Tone)
Analog Phone
Important Notes:
· Modem tone monitoring will work even if Phone Input Enable is Off via Settings >
Audio > Phone Input > Phone Input Enable [Off].
· Modem tone monitoring is only enabled during the initial connection training and
negotiation period in POTS Codec mode.
· The monitoring volume can be adjusted using the codec front panel via Settings >
Audio > Phone Input > Level, or by opening the Inputs panel in the Web-GUI and
adjusting the Phone input volume slider.
Country
This displays the current country setting in the codec. To adjust this setting select Settings >
System > Country.
20.3.2 Configuring POTS Answering
It is possible to store a different POTS Answer Config for each POTS module installed in the
codec. POTS answering can be configured to suit:
· The type of call being made, e.g. Tieline (with Tieline Session Data) versus non-Tieline
(Sessionless).
· Expected dialing behaviors and encoding, e.g. whether audio streams use Route tags and
which algorithm is used.
If you answer a call from a non-Tieline codec you will need to create an answering "Config" to
determine which module in the codec will answer the call and the settings used when connecting.
Important Notes:
· POTS Answer Config settings are applied to POTS Codec connections and not
Analog Phone connections.
· When receiving a call from a Tieline codec with session data enabled (i.e. not
Sessionless), the algorithm setting from the dialing codec overrides the setting in the
POTS Answer Config menu.
POTS Config Settings
The default POTS Answer module Config settings are:
· Tieline Codecs Session Data,
· The Other algorithm.
This configuration will accept the settings from an incoming Tieline codec when it dials with
session data enabled. It will also allow the codec to answer a call from a Comrex POTS codec
supporting the Other algorithm setting.
© Tieline Pty. Ltd. 2015
Module 2
POTS Codec
(Monitor Modem Tone)
Analog Phone
Analog Phone
Merlin User Manual v1.5
Audio Rule
The phone input receives a mix of modem tone
audio from both modules
The phone input receives analog phone input
audio only and mutes modem tone monitoring
The phone input receives audio from the oldest
active connection only
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