Nortel RLC, Installation And Administration Manual

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346 RLC Installation and Administration Guide
Planning forms Standard 4.0
Reach Line Card
System expansion worksheet
Page 2 of 5
Number of DSP application modules needed (continued)
3 How many remote users do you want to support?
Notes:
„
Up to 16 users can be connected to the NTDR68xx Line Card. Up to 32
users can be connected to the NTDR70xx or NTDR71xx Line Cards.
„
If using ATAs or MCAs to transmit data, the NTDR68xx Line Card supports
up to four ATAs or MCAs. NTDR70xx or NTDR71xx Line Cards support up
to seven ATAs or MCAs. Each ATA requires the resources of one DSP
channel for data transmission.
___________
4 Do you want to implement call blocking? (Users will receive a
fast busy signal when resources are not available.)
❒
Yes
❒
No
5 If step 4 is Yes, calculate the number of calls that can be active at one time.
Note: A conservative estimate of one call in three being blocked when no
resources are available is recommended.
Multiply your step 3 answer by your call blocking factor. For example, to
calculate the number of simultaneous calls that can be supported at a 3 to 2
blocking ratio, multiply your step 1 answer by 2/3 (0.666). If the result contains
a fraction, round up to a whole number.
Step 3: _________ x ___________ = _______________
If step 4 is No, the number of simultaneous calls is the same as the number of
user stations installed. (Record your response to step 3 here.)