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Appendix A:
Local transport requirements
Confirm the following router/switch settings prior to
activating your AT&T MetroCell:
1. DHCP is ON
[Note: For installations where static assignment
of an IP address is desired the use of MAC Binding
and static DHCP Reservation is suggested. Static
IP is not supported]
2. MTU size is set to 1492 or higher
3. MAC address filtering is either turned off or
allows the MAC address of the MetroCell
4. IPSec Pass-Through is Enabled
5. Block Fragmented Packets is Disabled
If using multiple routers, the MetroCell must be connected
to the first router connected to the broadband modem.
If the MetroCell is connected to a router that is connected
to a modem and both the router and the modem have NAT
(Network Address Translation) enabled, disable NAT either
in the router or in the modem.
Because of the wide variety of network configurations,
AT&T recommends consultation with a network specialist,
router manufacturer, and/or Internet Service Provider to
answer specific network setup questions.
TCP/UDP Ports
The following ports need to be Open for inbound and
outbound connections:
• UDP Ports 123, 500, 4500, 33434, 33435, 33436
• TCP Ports 443, 7004, 7014
IP Address Pass-Through
If the local network has a firewall with specific IP addresses
allowed to pass through, the following addresses must be
allowed to pass:
Port
TCP 443, 7004, 7014:
UDP 123:
UDP 500, 4500, 33434,
33435, 33436:
AT&T MetroCell 9962 installation guide • April 2016
IP Addresses
166.147.105.25
12.230.208.133
12.230.209.5
12.230.208.48
12.230.209.133
12.230.209.81
12.230.209.161
12.230.209.225
12.230.209.17
12.230.208.25
12.230.208.81
12.230.208.209
12.230.208.145
In addition, no traffic to or from the following URLs should
be blocked:
fileserver.metro.wireless.att.com
hnm.metro.wireless.att.com
initial-ipsecrouter.metro.wireless.att.com
Appendix B: Bandwidth requirements
Customer is responsible for providing connectivity to
the Internet.
The required bandwidth will depend on the number of
simultaneous users you want to be able to support and
whether data-intensive applications are being used.
The maximum total traffic that can be carried by a
MetroCell 9962 across all simultaneous users, based on its
radio interface, is up to 100 Mbps. Lesser Internet access
bandwidth may limit overall throughput.
The following table shows the minimum bandwidth required
for the MetroCell 9962 to operate properly, depending on
whether there are 1, 2, or 3 MetroCells sharing the same
access circuit:
Number of
Minimum Downlink
MetroCells
Bandwidth
Supported
1
20 Mbps
2
24 Mbps
3
25 Mbps
Appendix C:
Installing multiple MetroCells
A single MetroCell can cover up to 15,000 square feet,
depending on the building layout and construction
material. If the area to be served is larger than this, a 2nd or
3rd MetroCell may be required. However, be aware of the
following considerations:
• If the MetroCells are too close to each other (or to a
MicroCell or repeater), their signals may interfere with
each other, resulting in poor performance.
• If the MetroCells are too far away from each other, a call in
progress may drop where there is no signal coverage.
If optimal performance is desired, a custom Radio
Frequency (RF) design is required, performed by a qualified
RF engineer using sophisticated equipment, followed by
optimization of the antennas, transmit power, and other
settings. This level of customization is NOT included in the
standard installation option offered by AT&T.
Minimum Uplink
Bandwidth
3 Mbps
4 Mbps
6 Mbps
7
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