Polycom HDX Series Administrator's Manual page 32

Administrator's Guide for Polycom HDX Systems
2 - 18
Setting Description
PRI Video Specifies the ISDN number assigned to this system.
Number
Outside Line Specifies the ISDN dialing prefix used to call outside the
Dialing Prefix network.
BONDING: Specifies the use of a bonding standard. Incoming bonded
calls will use the original number received to connect all
Calling Endpoint
remaining lines required for the call.
Uses the Original
ISDN Number
3. Select and configure these settings:
Setting Description
Line Signaling Specifies the framing format in use.
This setting is configurable for PRI E1, read-only for PRI T1.
External CSU Specifies whether this system uses an external or internal
North America only Channel Service Unit (CSU).
Line Build Out For systems using an internal CSU, indicates the output
PRI T1 only attenuation in dB. Your service provider can provide you with
these values.
For systems using an external CSU, indicates the length (in
feet) of the RJ-45 cable that connects the PRI network
interface module to the CSU.
Switch Protocol Specifies the Network switch protocol. The available choices
are determined by the system's country settings.
This setting is read-only for PRI E1, configurable for PRI T1.
Your ISDN service provider can tell you which protocol your
network uses. If you later change the Country setting, the
PRI switch protocols available may also change, and you
may be prompted to configure a different PRI switch
protocol.
ISDN Voice Specifies which voice algorithm (aLaw or uLaw) is used for
Algorithm ISDN voice calls.
Do not change this setting unless you experience audio
issues in all ISDN voice calls.