Polycom viewstation fx vs4000 Manual De Usuario
Appendix A - Installation Notes
© Polycom, Inc.
A-3
ISDN Provisioning
ISDN PRI
The PRI T1 needs to be provisioned for the ViewStation FX and VS4000 systems as
follows:
follows:
The PRI direct from the telephone service provider should support both data and
voice for Polycom’s voice add-on capability of systems.
voice for Polycom’s voice add-on capability of systems.
Line settings
ESF/B8ZS (default)
Extended Super Frame B8ZS is modem standard for T1/PRI line
encoding and framing
encoding and framing
Line termination
type
type
CPE (user side) only
The required termination is built into the system and most access
switches
switches
Supported PRI
switch protocols
switch protocols
AT&T 4ESS, AT&T 5ESS, NI-1, NI-2, Siemens, Nortel DMS 100,
and Nortel 250
and Nortel 250
These are standard protocols for North America
Number of channels
23 B-channels dialable at 64 or 56 Kbps, and one D channel
Ensure that you have 64 Kbps clear channel service
Number of network
interfaces
interfaces
1 (single PRI)
Line build-out modes
DSU+CSU (0 to –22.5dB attenuation), DSU-only (DSX 0-665
feet)
feet)
Physical distance is offset by the settings in the user interface
Clocking
Must be derived from the external network or the PBX
Terminal Endpoint
ID (TEI)
ID (TEI)
0-63
This identifies the PRI endpoint; the common default is 0
Numbering
One local directory number per interface (23 channels)
D-channel slot
number
number
24
Included to verify where the D channel is; this is where additional
diagnostic information resides
diagnostic information resides
Call-by-call service
codes
codes
Values 0-31 service codes for GVPN/PN/UPN network-specific
services
services