Nortel RLC Installation And Administration Manual page 373

June 2005
Reach Line Card
System expansion worksheet
Number of DSP application modules needed (continued)
6 Divide your step 5 answer by 8, then round down the result to a whole number.
Step 5: __________ / 8 = __________
The total number of DSP channels required at the local site equals the total
number of simultaneous remote service telephone calls that you want to allow
on your entire remote network. This includes calls from Remote Gateway 9150,
9110, 9115 units, and Digital Telephone IP Adapter units (Internal and
External). Assuming that there are eight voice channels available on a single
DSP application module (the current DSP application module channel
capacity), and taking into account the eight built-in DSP channels on the RLC
and Remote Gateway 9150 unit, determine the number of DSP application
modules required on your host PBX using the following equations:
(This calculation assumes G.729/FAX compression. For G.711 or G.726, divide by four.)
simultaneous remote service voice calls required for 9150 and 911x / 4
Note: Each DSP application module consists of two DSP devices.
RLC Installation and Administration Guide
A: fax DSP devices required =
simultaneous fax calls from Remote Gateway 9150 / 2
B: voice DSP devices required =
C: 911x DSP devices required =
simultaneous PSTN connections for 911x / 4
total DSP devices required = A + B + C - 2
Planning forms
Page 3 of 5
___________
347