Nokia IPSO 4.0 manual Isdn Bearer-Capable Values, Value Description

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„Note 6—Locking and non-locking shift procedures described in the ITU-T Q.931 specification apply. In principle, information element identifiers are in the same order as the information elements in the received message.

„Note 7—The following coding applies: Bit 8, extension bit

Bits 7 through 5, spare

Bits 4 through 1, according to Table 4-15/Q.931 octet 3.2, channel type in ITU-T Q.931 specification.

„Note 8—When only the locking shift-information element is included and no variable length information-element identifier follows, it means that the codeset in the locking shift itself is not implemented.

„Note 9—The timer number is coded in IA5 characters.

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The following coding is used in each octet: Bit 8, Spare “0”

Bits 7 through 1, IA5 character

Note 10—Examples of the cause values to be used for various busy or congested conditions appear in Annex J of the ITU-T Q.931 specification.

Note 11—The diagnostic field contains the entire transit network selection or network- specific facilities information element, as applicable.

Note 12—For the coding that is used, see ISDN Cause Codes table.

ISDN Bearer-Capable Values

The ISDN bearer-capability values that display in the SETUP packet using the tracing tcpdump command follows:

0x8890 for 64 Kbps or 0x218F for 56 Kbps

Value

Description

88ITU-T coding standard; unrestricted digital information

90Circuit mode, 64 Kbps

21Layer 1, V.110 / X.30

8F Synchronous, no in-band negotiation, 56 Kpbs

70 Nokia Network Voyager for IPSO 4.0 Reference Guide