Setting Description Line Signaling, External CSU

Administrator’s Guide for Polycom HDX Systems

	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
	Calling Endpoint	calls will use the original number received to connect all
	Calling Endpoint	remaining lines required for the call.
	Uses the Original	remaining lines required for the call.
	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.

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1 specifications

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Polycom 1 Specifies the use of a bonding standard. Incoming bonded, External CSU, Line Build Out

Models: 1

Administrator’s Guide for Polycom HDX Systems

BONDING:

Specifies the use of a bonding standard. Incoming bonded

3. Select and configure these settings:

Setting

Description

Line Signaling

External CSU

Line Build Out

Switch Protocol

ISDN Voice

Algorithm

1 specifications