Polycom ViewStation EX4000 - Manual (Page 74)

Integrators’ Reference Manual for ViewStation EX, ViewStation FX, and VS4000
64 www.polycom.com
The PRI T1 needs to be provisioned for the ViewStation FX and
VS4000 systems as follows:
Table 3-4. ISDN PRI Requirements
Line settings ESF/B8ZS (default)
Extended Super Frame B8ZS is modem standard for
T1/PRI line encoding and framing
Line termination
type CPE (user side) only
The required termination is built into the system and
most access switches
Supported PRI
switch protocols AT&T 4ESS, AT&T 5ESS, NI-1, NI-2, Siemens,
Nortel DMS 100, 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 1 (single PRI)
Line build-out
modes DSU+CSU (0 to –22.5dB attenuation), DSU-only
(DSX 0-665 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) 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 24
Included to verify where the D channel is; this is
where additional diagnostic information resides
Call-by-call
service codes Values 0-31 service codes for GVPN/PN/UPN
network-specific services