Advanced voice configuration
90
Z-Edge 64 Configuration Guide
the ATM network equipment must be able to determine if the ISDN B channel
is carrying voice or data traffic and then act accordingly.
The Z-Edge 64 uses high level data link control (HDLC) as the framing
protocol used for data link communications over ATM. The system detects
that the ISDN B channel is carrying data payload by recognizing the
hexadecimal 0x7E flags that are at the beginning and end of HDLC frames.
Note:
Only HDLC-framed protocols (such as PPP and V.120) are
supported for ISDN B-channel data communications.
Modify the following parameter in the aal2-cid-profile to enable ISDN B
channel data communications:
Modify the following parameter in the system profile to enable ISDN B
channel data communications:
Enabling ISDN B-channel data
To enable ISDN B channel dial-up data calls, the pcm-encoding parameter
must be set to alaw in the aal2-cid-profile for the matching CID on both the
Z-Edge 64 and the connecting voice gateway (Sechtor 100A).
Note:
Ensure that both the Z-Edge 64 and the voice gateway have the
pcm-encoding parameter set to alaw in the aal2-cid-profile for the
matching CID to enable B-channel data.
Parameter
Description
pcm-encoding
Pulse code modulation (PCM)
encoding format.
Values:
mulaw for North American countries
alaw for European countries
Default: mulaw
Parameter
Description
countryregion
The country or region this system is
operating in. This setting is used to
adjust system settings for different
countries. For example, digital signal
processing (DSP) tones and time
division multiplexing (TDM)
companding are country-specific
settings that can be determined by this
setting.