Comment #10 on issue 3 by [email protected]: Allow mobicents SS7 stack to be configurable to use 5 or 8 bit SLS
http://code.google.com/p/jss7/issues/detail?id=3

About enum for Mtp3UserPart: we chinese SPS coding has 24-bit pointcodes but which are incompatible with both ANSI and other ITU-T networks. So we really need an enum for it.

ANSI point codes use 24-bits (three octets); ITU-T point codes typically use 14-bits. For this reason, signaling information exchanged between ANSI and ITU-T networks must be routed through a gateway STP, protocol converter, or other signaling point that has both an ANSI and an ITU-T point code. (Note: China uses 24-bit ITU-T point codes, which are incompatible with both ANSI and other ITU-T networks). Interaction between ANSI and ITU-T networks is further complicated by different implementations of higher-level protocols and
procedures.

An ANSI point code consists of network, cluster, and member octets (e.g., 245-16-0). An octet is an 8-bit byte that can contain any value between zero and 255. Telcos with large networks have unique network identifiers while smaller operators are assigned a unique cluster number within networks 1 through 4 (e.g., 1-123-9). Network number 0 is not used; network number 255 is reserved for future use.

ITU-T point codes are pure binary numbers, which may be stated in terms of zone, area/network,and signaling point identification numbers. For example, the point
code 5557 (decimal) may be stated as 2-182-5 (binary 010 10110110 101).

Possible Enum values
ANSI
ITU
Japan TTC/DDI
China
Japan NTT

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