Conditions
• Primary Rate Interface (PRI):
The system is compatible with ISDN Primary Rate Interface (PRI) services. PRI services currently
supported include:
- Basic PRI Call Control (BCC)
- Display of incoming caller’s name and number when allowed by Telco
- Routing in the system based on the number the caller dialed
- ISDN maintenance functions (such as In Service/Out of Service Messaging)
- Speech and 3.1 KHz audio
PRI capability requires the installation of 1PRIU-C1. Each PRI circuit provides 32 PRI channels (30B
+ 2D). The T1/PRI Interface uses a single slot. When installed, the T1/PRI Interface uses the first
block of 32 consecutive trunks.
• When using fractional PRI, the unit comes up as zero ports until PRG 10-03-06 is set to the
4/8/12/16/20/24(auto), and then reset.
• If fractional PRI has the number of ports changed, the Trunk Port number might change if they
become split or fit into an empty gap of trunk ports.
• If using a CSU/DSU, PRG 10-03-13 must be set to 0. If not using a CSU/DSU, PRG 10-03-13 must
be set to 1~7 or anything other than 0.
• Restrictions for Calling Party Name:
The SL1000/SL1100 supports receiving the name from the Network in supported formats only and
cannot send the Calling Name. Refer to Table 1-42 Restrictions for Calling Party Names on
page 1-432.
Table 1-42 Restrictions for Calling Party Names
Protocols Name Delivery Formats
NI-2 Facility Information Elements
4ESS (AT&T Custom) Not Supported
AT&T 5ESS Lucent Custom Facility Information Element
DMS-100 (Custom) * Display Information Element *
DMS-100 (National; ISDN) ** Facility Information Element **
* Nortel Specification NIX-A211-1
** Nortel Specification NIS-A233-1
• CO Line Service is not supported.
ISDN - PRI cannot be configured for CO Emulation
SL1000/SL1100 ISSUE 2.0
1-432
ISDN Compatibility
I
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