Network Telephone Interfaces
on page 195.
Interface
North American
CEPT
1
Number of Channels/TMS (Inbound/
Outbound)
24, 48, 72, 96, or 192 (1, 2, 3, 4 or 8
T1 Spans)
30, 60, 90, 120, or 240 (1, 2, 3,
4, or 8 E1 Spans)
Modularity
24 Channels (1 T1)
30 Channels (1 E1)
Total / MPS 500
8 Spans /192 Channels
8 Spans /240 Channels
Network Interface
1.544 Mbps ±75 bps Bipolar, Return
to Zero, D4 Framing (ESF Optional)
2.048 ± 100 bps Bipolar,
Return to Zero
Line Impedance
100 Ohms
120 Ohms Twisted Pair
Line Coding
AMI or B8Zs
HDB3
Cable Length
Up to 600 ft.
Ref - G.703
Connector Type
RJ48M or RJ48C
RJ48M or RJ48C
DTMF Input Level
+1 to -27 dBm
+1 to -27 dBm
Tone ON Time
40 milliseconds
40 milliseconds
Tone OFF Time
40 milliseconds
40 milliseconds
Freq. Deviation
± 1.5%
± 1.5%
Tone Twist
-10 dB to + 10 dB
-10 dB to + 10 dB
1. The European Conference of Postal and Telecommunications Administrations
Telephony Interfaces
Digital Interfaces
RJ48M
The TMS connects to the public switched telephone network (PSTN) through a USOC RJ48M 50-
pin connector located on the front panel of each DCC. This interface provides capacity for up to
eight T1 or E1 spans. The digital interface connections for span/line 1 are shown in the following
illustration. Connections for all spans are listed in the following table.
Network Telephone Interfaces
October 2014
Avaya Media Processing Server 500 Hardware Installation and Maintenance
195