Nortel Meridian 1 Option 11C, Administration And Maintenance

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Chapter 5 — ISDN BRI line and packet data implementation Page 191 of 492
Option 11C ISDN BRI Administration and Maintenance
NTAK09/NTAK10/NTBK50 PRI card
Note 1: This item is required for packet data implementation only.
Note 2: Vintage NTBK50AA is required for Downloadable D-channel
applications. When setting the timers for EuroISDN PRI2 loops in
Overlay 73, the following settings are required:
If the Option 11 is connected to a local exchange that supports CRC-4
multiframing, enter CRC-4 in response to the MFF prompt, enter yes in
response to the ACRC prompt (to select automatic CRC error reporting),
and enter ALT in response to the ALRM prompt (to select alternate alarm
mode).
If the Option 11 is connected to a local exchange that does not support
CRC-4 multiframing, enter AFF in response to the MFF prompt, and
enter ALT in response to the ALRM prompt (to select alternate alarm
mode);
In response to the PERS prompt, enter 50 to set the alarm persistence
timer to 100ms;
In response to the CLRS prompt, enter 1 to set the clearance persistence
timer to 2ms.
ISDN PRI is required for packet data implementation to connect the Option
11 to the external packet handler (DPN-100). B and/or D-channel packet
data is transmitted over clear 64 kbps PRI B-channels to the packet handler
(a D-channel daughter board is not required). The maximum number of ISDN
PRI channels available for communication with the packet handler should not
exceed 23 with 1.5 Mb PRI or 30 with 2 Mb PRI.
Data Packet Network (DPN-100)
Note: This item is required for packet data implementation only.
Northern Telecom's Data Packet Network (DPN-100) is used as the external
packet handler to process the B and/or D-channel packet data sent to it over
PRI B-channels.