Cisco Systems 700 MHz 사용자 설명서

T1 Smart Blades support digital connections to a PBX system or to a public switched phone network 
(PSTN). The framing for the digital lines can be either Extended Superframe (ESF) or D4 framing. The 
digital lines can use either Binary 8-Zero Substitution (B8ZS) or jammed-bit coding.

We recommend using ESF framing and B8ZS coding. Using D4 framing or jammed-bit coding may not 
be satisfactory.

Supplemental earth grounding is required at all times. This supplemental grounding consists of a 
grounding cable that is attached to supplemental ground lugs on the back of the Cisco Unified 
MeetingPlace Audio Server chassis and is permanently connected to an earth ground point at the other 
end through an appropriate facilities-grounding terminal.

You must use shielded cables, and you must electrically terminate the shield at the back of the Cisco 
Unified MeetingPlace Audio Server.

Note the following considerations:

Cisco Unified MeetingPlace supports fractional T1 services and has complete flexibility to activate 
any or all ports on a span.

Cisco Unified MeetingPlace can use dialed-number information to directly connect the caller to a 
meeting or to determine the Cisco Unified MeetingPlace services to which the caller has access.

You can configure Cisco Unified MeetingPlace to support devices where the T1 trunk does not 
provide any signaling and is always offhook. This is used in applications where a clear channel 
connection is required.

 lists the T1 digital trunk requirements by country for a Cisco Unified MeetingPlace system.

U.S.

Canada

115 VAC

NEMA 5-15R socket. Outlet installed within 8 feet of 
the Audio Server.

Hong Kong

European Union

240 VAC

BS-1363 socket. Outlet installed within 8 feet of the 
Audio Server.

Japan

100 VAC

 

(50 Hz for East Japan;

 

60 Hz for West Japan)

NEMA 5-15R socket. Outlet installed within 8 feet of 
the Audio Server.