Cisco Cisco Unified MeetingPlace Audio Server Installation Guide
Telephony and LAN planning 3-43
February 27, 2004
Cisco MeetingPlace Audio Server Installation Planning Guide
WARNING
The following telephony components or services can take from
4 to 6 weeks to order and install:
•
Network Telco Service (trunk lines, main phone number, or combined
access numbers)
access numbers)
•
PBX specific hardware or software (Smart Blades, software upgrade)
•
Additional hardware (CSU, UPS)
• Coding format
One of the following:
• HDB3 (strongly recommended)
• AMI
N
OTE
If AMI is used, the number of zeros (0) in a row may
exceed the recommended Telco value of 15. This can happen
if all participants in the same meeting are on the same span. In
that case, a 0s pattern can be sent to all channels at the same
time, exceeding the maximum. This, in turn, can lead to
meeting participants being dropped by the Telco from the
meeting. Therefore, use B8ZS or Jammed Bit, if possible.
if all participants in the same meeting are on the same span. In
that case, a 0s pattern can be sent to all channels at the same
time, exceeding the maximum. This, in turn, can lead to
meeting participants being dropped by the Telco from the
meeting. Therefore, use B8ZS or Jammed Bit, if possible.
• Framing
One of the following:
• CRC4 checking (strongly recommended)
• Non-CRC4
• Additional hardware
No Channel service unit (CSU) required in Europe, because the
Telco provides its own.
Telco provides its own.
8. Modem requirements
• Analog telephone line, or PBX connection
• Pilot number, accessible from outside
• RJ-11C connector
9. Translation table
Translation table requirements for dialing restrictions.
Action
Description