[Android Software/Hacking General [Developers Only]] aviatcogni:
I was able to extract following file from Funbook android system. Hope this helps for further customization.

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# Readme:

# External 3g dongle configuration file

# 1. This file must be named 3g_dongle.cfg

# 2. The path of this file must be put in the /system/etc/.

#	eg. /system/etc/3g_dongle.cfg

# 3. # means a comment line.

# 4. Section name and Key mustn't be contain space,tab and comment character,otherwise it will lead to ERROR.

# ËµÃ÷:

# 1.´ËÎÄ¼þÂ·¾¶ºÍÎÄ¼þÃû±ØÐëÊÇ"/system/etc/3g_dongle.cfg"£¬×¢ÊÍ±ØÐëµÚÒ»¸ö×Ö·ûÊ¹ÓÃ#·ûºÅ;

# 2.SectionºÍKey×Ö¶ÎÇ°ºó¶¼²»ÄÜÓÐ¿Õ¸ñ¡¢tab¼ü¡¢×¢ÊÍµÈ×Ö·û£¬·ñÔò½âÎö¹ý³Ì»á±¨´í;

# 3.±¾ÅäÖÃÎÄ¼þ°üº¬Á½¸ö²¿·Ö:

# µÚÒ»²¿·ÖÎªÉÏÍø²¦ºÅºÅÂë£¬±ØÐëÌîÐ´,

#	¸÷¸öÔËÓªÉÌ²»Í¬,Ä¬ÈÏÊÇÖÐ¹úµÄÈý´óÔËÓªÉÌ²¦ºÅºÅÂë,¹úÍâµÄÔËÓªÉÌ²¦ºÅºÅÂëÐèÒªÐÞ¸Ä;

#	µÚ¶þ²¿·ÖÎªÐÂÔödongleµÄÅäÖÃÌîÐ´,Ò»°ã²»Ö§³ÖµÄ3g dongleÖ»ÐèÒªÌîÐ´¼¸¸ö±ØÒª²ÎÊý¼´¿ÉÖ§³Ö£¬Èç¹û»¹²»Ö§³Ö£¬Çë·´À¡¸øallwinner£¬Ð»Ð»£¡

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# Part 1£ºoperator dial number

# dial number detals:

# ²¦ºÅºÅÂëÀý×Ó£º

# pppd²¦ºÅºÅÂë£¬¸ù¾Ý¸÷ÔËÓªÉÌÊµ¼ÊºÅÂëÌîÐ´£¬ÀýÖÐ¹úÈý¼ÒÔËÓªÉÌ£ºÁªÍ¨ÎªATDT*99#£¬µçÐÅÎªATDT#777£¬ÒÆ¶¯ÎªATDT*98*1#

# ²»Í¬¹ú¼ÒÐèÒªÐÞ¸ÄÏÂÃæµÄ²¦ºÅºÅÂë£¬tdscdmaÖ»ÔÚÖÐ¹úÊ¹ÓÃ£¬²»ÓÃÐÞ¸Ä£¬±£Áô¡£

# ¹úÍâµÄÔËÓªÉÌÖ»ÐèÒª¸ü¸ÄwcdmaºÍcdma2000µÄ²¦ºÅºÅÂë¡£

#

#[DIAL_NUMBER]

#wcdma=ATDT*99# -- gprs,edge,wcdma,hspda,hspua,hspa for China Unicom,¹úÍâwcdmaÍøÂçÔËÓªÉÌÐèÒªÐÞ¸ÄÕâ¸ö²¦ºÅºÅÂë.

#cdma2000=ATDT#777 -- cdma2000,evdo Rev.O,Rev.A,Rev.B for China Telecom,¹úÍâcdma2000ÍøÂçÔËÓªÉÌÐèÒªÐÞ¸ÄÕâ¸ö²¦ºÅºÅÂë.

#tdscdma=ATDT*98*1#	-- gprs,edge,td-scdma... for China Mobile£¬½ö½ö¶ÔÖÐ¹úÒÆ¶¯µÄÍøÂçÓÐÐ§:gprs/edge/td-scdma,ÎÞÐëÐÞ¸Ä.

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# Part 2: newly add dongle

# Section¡¢Key¸÷×Ö¶ÎËµÃ÷¼ûÏÂÃæÀý×Ó£º

#

#[E1750]	#dongle name,¿ÉÒÔÊÇÏàÍ¬µÄ£¬×îºÃ¸ù¾ÝdongleµÄÃû×ÖÌîÐ´.

#dongle_name=E1750	#dongle name,Í¬ÉÏ

#production_name=E1750	#It must get the production_name from AT command "AT+CGMM",no matter what the string is.<±ØÐëÌîÐ´ÕýÈ·>

#vendor_name=huawei	#the vendor,eg. huawei,zte,ASB,ation...,just named it with a easy way.ÖÆÔìdongleµÄ³§ÉÌ

#network_type=GSM_MODE	# ¿ÉÑ¡²ÎÊýÖ»ÓÐÈý¸ö:GSM_MODE,CDMA_MODE,TD_MODE;<±ØÐëÌîÐ´ÕýÈ·>

#	# 1. GSM_MODE¶ÔÓ¦gprs,edge,wcdma,hsdpa,hsupa,hspaµÈÍøÂç£¬ÔÚÖÐ¹ú¶ÔÓ¦ÖÐ¹úÁªÍ¨;

# # 2. CDMA_MODE¶ÔÓ¦cdma2000¼°ÆäÑÝ½øÍøÂç£¬ÔÚÖÐ¹ú¶ÔÓ¦ÖÐ¹úµçÐÅ;

#	# 3. TD_MODE¶ÔÓ¦ÖÐ¹úÒÆ¶¯µÄÄ¿Ç°ËùÓÐÍøÂç£¬½ö½ö¶ÔÖÐ¹úÒÆ¶¯ÓÐÐ§¡£

#pid_vid_origin=0x12d11446	#dongle×ª»¯Ç°µÄpid/vid£¬¿ÉÒÔÌî0x0

#bcdDevice_origin=0x0	#dongle×ª»¯Ç°µÄbcdDevice£¬¿ÉÒÔÌî0x0

#pid_vid_now=0x12d11001	#dongle×ª»¯ºóµÄpid/vid£¬±ØÐë¸ù¾ÝÊµ¼ÊÖµÀ´ÌîÐ´£¬²»ÄÜÌî0x0,<±ØÐëÌîÐ´ÕýÈ·>

#bcdDevice_now=0x0	#dongle×ª»¯ºóµÄbcdDevice£¬¿ÉÒÔÌî0x0

#at_port=2	#AT command port,ril¿âÍ¨ÐÅÊ¹ÓÃµÄAT¶Ë¿Ú£¬ <±ØÐëÌîÐ´ÕýÈ·>

#ppp_port=0	#pppd use this port to dial,pppd²¦ºÅÊ¹ÓÃµÄ¶Ë¿Ú£¬<±ØÐëÌîÐ´ÕýÈ·>

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[DIAL_NUMBER]

wcdma=ATDT*99#

cdma2000=ATDT#777

tdscdma=ATDT*98*1#

[E1750]

dongle_name=E1750

production_name=E1750

vendor_name=huawei

network_type=GSM_MODE

pid_vid_origin=0x12d11446

bcdDevice_origin=0x0

pid_vid_now=0x12d11001

bcdDevice_now=0x0

at_port=2

ppp_port=0

[E353]

dongle_name=E353

production_name=E353

vendor_name=huawei

network_type=GSM_MODE

pid_vid_origin=0x12d11446

bcdDevice_origin=0x0

pid_vid_now=0x12d114ac

bcdDevice_now=0x0

at_port=3

ppp_port=0

[EC1261]

dongle_name=EC1261

production_name=EC1261

vendor_name=huawei

network_type=CDMA_MODE

pid_vid_origin=0x12d11505

bcdDevice_origin=0x0

pid_vid_now=0x12d1140c

bcdDevice_now=0x0

at_port=3

ppp_port=0

[EC1261]

dongle_name=EC1261

production_name=EC1261

vendor_name=huawei

network_type=CDMA_MODE

pid_vid_origin=0x12d11446

bcdDevice_origin=0x0

pid_vid_now=0x12d11001

bcdDevice_now=0x0

at_port=2

ppp_port=0