Cisco 194424 - Interface Module ISDN-BRI Manual de usuario descargar pdf (Pagina 2)

List of Terms

MOD-2

Release 12.0(4) T

List of Terms

NT—Network termination; the network side of an ISDN BRI interface.

PINX—Private integrated services network exchange; a PBX or key system which, in this BRI voice

application, uses QSIG signaling.

POTS—Plain Old Telephone Service. Basic telephone service supplying standard single-line

telephones, telephone lines, and access to the public switched telephone network.

QSIG—Common channel signaling protocol based on ISDN Q.931 standards and used by many

digital PBXs.

S/T interface—BRI 4-wire interface that can be conﬁgured to terminate a subscriber line (S) or a

trunk (T).

TE—Terminal equipment; the user side of an ISDN BRI interface.

Restrictions

The standard Cisco IOS ISDN implementation is supported with the following exceptions:

• Direct connections between ISDN BRI voice ports and ISDN phones are not supported by the

Cisco IOS software.

• The BRI voice ports support only QSIG. Other ISDN switch/signaling types are not supported.

• Data trafﬁc is not supported on the ISDN BRI voice interface. Calls with bearer capability

indicating a non-voice type (such as video telephony) are rejected.

• Although all four BRI ports can be conﬁgured in TE (user) mode, only one will be selected as

the clock slave to receive network clock from an NT device.

• If the BVM is installed, the speed (clock rate) of serial port 1 of the Cisco MC3810 is limited to

a maximum of 192 kbps. This restriction assumes that the MFT is installed in slot 3 on the Cisco

MC3810. If the MFT is not installed, serial port 1 will not operate.

For more information about standard Cisco ISDN BRI conﬁguration, see the Dial Solutions

Conﬁguration Guide.

Platforms

This feature is supported only on the Cisco MC3810 multiservice access concentrator.

Supported MIBs and RFCs

None.

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Cisco 194424 - Interface Module ISDN-BRI Manual de usuario Pagina 2